[Firebase AI] Use build-for-testing and test-without-building

[andrewheard]

Updated build.sh to use the xcodebuild actions build-for-testing and test-without-building (instead of build and test) for the integration tests. This may speed up the GHA since test seems to rebuild.

#no-changelog

[ncooke3]

Nice improvement!

[paulb777]

Please touch Gemfile to force a full rebuild to verify this works across all CI.

[andrewheard]

Please touch Gemfile to force a full rebuild to verify this works across all CI.

Now in progress. One thing to note, since it may be be clear from the default diff view, this only touches the FirebaseAIIntegration-*-*) section of build.sh:

  FirebaseAIIntegration-*-*)
    # Build
    RunXcodebuild \
      -project 'FirebaseAI/Tests/TestApp/FirebaseAITestApp.xcodeproj' \
      -scheme "FirebaseAITestApp-SPM" \
      "${xcb_flags[@]}" \
      build-for-testing

    # Run tests
    RunXcodebuild \
      -project 'FirebaseAI/Tests/TestApp/FirebaseAITestApp.xcodeproj' \
      -scheme "FirebaseAITestApp-SPM" \
      "${xcb_flags[@]}" \
      -parallel-testing-enabled NO \
      -retry-tests-on-failure \
      -test-iterations 3 \
      test-without-building
    ;;

[paulb777]

Oh sorry. I missed the context that it was only for AI Logic. I'm fine to revert the Gemfile change and merge. We can update other products later.

[paulb777]

LGTM after reverting Gemfile