chore: fix concurrency groups (#1902)

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> [!IMPORTANT]
> Fix concurrency group naming in GitHub workflows to prevent deadlocks
by adding specific suffixes.
> 
>   - **Concurrency Group Fixes**:
> - In `build-vscode-release.reusable.yaml`, added suffix
`-build-vscode` to concurrency group to prevent deadlocks.
> - In `integ-tests.yml`, added suffix `-integ-tests` to concurrency
group to prevent deadlocks.
> - In `release.yml`, added comment explaining the need for a
statically-defined suffix in reusable workflows to prevent deadlocks.
> 
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Author: sxlijin

.github/workflows/build-vscode-release.reusable.yaml

@@ -1,5 +1,10 @@
 name: BAML Release - Build VSCode Extension (Matrix Packaging)
 
+concurrency:
+  # suffix is important to prevent a concurrency deadlock with the calling workflow
+  group: ${{ github.workflow }}-${{ github.ref }}-build-vscode
+  cancel-in-progress: true
+
 on:
   workflow_call:
     inputs:

.github/workflows/integ-tests.yml

@@ -8,7 +8,8 @@ on:
     branches: [ sam/integ-tests-ci ]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  # suffix is important to prevent a concurrency deadlock with the calling workflow
+  group: ${{ github.workflow }}-${{ github.ref }}-integ-tests
   cancel-in-progress: true
 
 permissions:

.github/workflows/release.yml

@@ -17,6 +17,8 @@ on:
       - "test-release/*.*"
       - "*.*"
 concurrency:
+  # No suffix specified - in reusable workflows we need a statically-defined suffix
+  # to prevent workflow_call workflows from triggering a concurrency deadlock
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true