Install Firebase tools locally, and skip if unneeded in desktop tests.

[jonsimantov]

Description

Provide details of the change, and generalize the change in the PR title above.

npm -g is failing on Windows due to file access issues. Instead, install npm packages locally and add the local module paths to the system PATH.

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Testing

Describe how you've tested these changes. Link any manually triggered Integration tests or CPP binary SDK Packaging Github Action workflows, if applicable.

Integration test in this PR, tests on all 3 platforms.

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Type of Change

Place an x the applicable box:

• Bug fix. Add the issue # below if applicable.
• New feature. A non-breaking change which adds functionality.
• Other, such as a build process or documentation change.

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Notes

• Bug fixes and feature changes require an update to the Release Notes section of release_build_files/readme.md.
• Read the contribution guidelines CONTRIBUTING.md.
• Changes to the public API require an internal API review. If you'd like to help us make Firebase APIs better, please propose your change in a feature request so that we can discuss it together.

[github-actions]

❌  Integration test FAILED

Requested by @jonsimantov on commit 91efa2a
Last updated: Thu Nov 2 15:53 PDT 2023
View integration test log & download artifacts

Failures	Configs
analytics	[BUILD] [ERROR] [iOS] [macos]
app_check	[BUILD] [ERROR] [iOS] [macos] [BUILD] [ERROR] [tvOS] [macos]
auth	[TEST] [ERROR] [Android] [1/3 os: macos] [1/2 android_device: android_target] [TEST] [FLAKINESS] [Android] [1/3 os: ubuntu] [1/2 android_device: android_target] (1 failed tests)   CRASH/TIMEOUT
database	[BUILD] [ERROR] [tvOS] [macos]
firestore	[BUILD] [ERROR] [iOS] [macos] [BUILD] [ERROR] [tvOS] [macos] [TEST] [ERROR] [Android] [2/3 os: ubuntu windows] [1/2 android_device: android_target]
functions	[BUILD] [ERROR] [tvOS] [macos]
gma	[TEST] [FLAKINESS] [Android] [1/3 os: ubuntu] [1/2 android_device: android_target] (1 failed tests)   FirebaseGmaTest.TestAdViewLoadAd
installations	[BUILD] [ERROR] [iOS] [macos]
remote_config	[BUILD] [ERROR] [tvOS] [macos] [TEST] [ERROR] [Android] [1/3 os: windows] [1/2 android_device: android_target]
storage	[BUILD] [ERROR] [iOS] [macos]

Add flaky tests to go/fpl-cpp-flake-tracker