[tooling] mark infra steps as infra steps in yaml files (#4473)

- Add infra notation to infra tasks in packages repo
flutter/flutter#130598

.ci/targets/analyze.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: analyze repo tools
     script: .ci/scripts/analyze_repo_tools.sh
   - name: analyze

.ci/targets/analyze_legacy.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   # Does a sanity check that packages at least pass analysis on the N-1 and N-2
   # versions of Flutter stable if the package claims to support that version.
   # This is to minimize accidentally making changes that break old versions

.ci/targets/android_build_all_packages.yaml

@@ -1,8 +1,10 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create all_packages app
     script: .ci/scripts/create_all_packages_app.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build all_packages for Android debug
     script: .ci/scripts/build_all_packages_app.sh
     args: ["apk", "debug"]

.ci/targets/dart_unit_tests.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: Dart unit tests
     script: script/tool_runner.sh
     args: ["dart-test", "--exclude=script/configs/dart_unit_tests_exceptions.yaml", "--platform=vm"]

.ci/targets/ios_build_all_packages.yaml

@@ -1,8 +1,10 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create all_packages app
     script: .ci/scripts/create_all_packages_app.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build all_packages for iOS debug
     script: .ci/scripts/build_all_packages_app.sh
     args: ["ios", "debug", "--no-codesign"]

.ci/targets/ios_platform_tests.yaml

@@ -1,8 +1,10 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create simulator
     script: .ci/scripts/create_simulator.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build examples
     script: script/tool_runner.sh
     args: ["build-examples", "--ios"]
@@ -25,3 +27,4 @@ tasks:
   - name: remove simulator
     script: .ci/scripts/remove_simulator.sh
     always: true
+    infra_step: true

.ci/targets/linux_build_all_packages.yaml

@@ -1,8 +1,10 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create all_packages app
     script: .ci/scripts/create_all_packages_app.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build all_packages for Linux debug
     script: .ci/scripts/build_all_packages_app.sh
     args: ["linux", "debug"]

.ci/targets/linux_custom_package_tests.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: custom tests
     script: script/tool_runner.sh
     args: ["custom-test"]

.ci/targets/macos_build_all_packages.yaml

@@ -1,8 +1,10 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create all_packages app
     script: .ci/scripts/create_all_packages_app.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build all_packages for macOS debug
     script: .ci/scripts/build_all_packages_app.sh
     args: ["macos", "debug"]

.ci/targets/macos_check_podspecs.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: validate iOS and macOS podspecs
     script: script/tool_runner.sh
     args: ["podspec-check"]

.ci/targets/macos_custom_package_tests.yaml

@@ -1,10 +1,13 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create simulator
     script: .ci/scripts/create_simulator.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: custom package tests
     script: .ci/scripts/custom_package_tests.sh
   - name: remove simulator
     script: .ci/scripts/remove_simulator.sh
     always: true
+    infra_step: true

.ci/targets/macos_platform_tests.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build examples
     script: script/tool_runner.sh
     args: ["build-examples", "--macos"]

.ci/targets/repo_checks.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: format
     script: script/tool_runner.sh
     args: ["format", "--fail-on-change"]

.ci/targets/repo_tools_tests.yaml

@@ -1,5 +1,6 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: tool unit tests
     script: .ci/scripts/plugin_tools_tests.sh

.ci/targets/web_build_all_packages.yaml

@@ -1,8 +1,10 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create all_packages app
     script: .ci/scripts/create_all_packages_app.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   # No debug version, unlike the other platforms, since web does not support
   # debug builds.
   - name: build all_packages app for Web release

.ci/targets/web_dart_unit_tests.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: Dart unit tests - web
     script: script/tool_runner.sh
     args: ["dart-test", "--exclude=script/configs/dart_unit_tests_exceptions.yaml", "--platform=chrome"]

.ci/targets/web_platform_tests.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build examples
     script: script/tool_runner.sh
     args: ["build-examples", "--web"]

.ci/targets/windows_build_all_packages.yaml

@@ -1,8 +1,10 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: create all_packages app
     script: .ci/scripts/create_all_packages_app.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build all_packages app for Windows debug
     script: .ci/scripts/build_all_packages_app.sh
     args: ["windows", "debug"]

.ci/targets/windows_build_and_platform_tests.yaml

@@ -1,6 +1,7 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: build examples (Win32)
     script: .ci/scripts/build_examples_win32.sh
   - name: native unit tests (Win32)

.ci/targets/windows_custom_package_tests.yaml

@@ -1,5 +1,6 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: custom package tests
     script: .ci/scripts/custom_package_tests.sh

.ci/targets/windows_dart_unit_tests.yaml

@@ -1,5 +1,6 @@
 tasks:
   - name: prepare tool
     script: .ci/scripts/prepare_tool.sh
+    infra_step: true # Note infra steps failing prevents "always" from running.
   - name: dart unit tests
     script: .ci/scripts/dart_unit_tests_win32.sh