Analyze framework Dart code in presubmit tests (#13037)

This fixes flutter/flutter#38848

Author: liyuqian

.cirrus.yml

@@ -54,6 +54,12 @@ task:
         cd $FRAMEWORK_PATH/flutter/dev/integration_tests/web
         ../../../bin/flutter config --local-engine=host_debug_unopt --no-analytics --enable-web
         ../../../bin/flutter --local-engine=host_debug_unopt build web -v
+      analyze_framework_script: |
+        cd $FRAMEWORK_PATH/flutter
+        rm -rf bin/cache/pkg/sky_engine
+        cp -r $ENGINE_PATH/src/out/host_debug_unopt/gen/dart-pkg/sky_engine bin/cache/pkg/
+        bin/flutter update-packages --local-engine=host_debug_unopt
+        bin/flutter analyze --dartdocs --flutter-repo --local-engine=host_debug_unopt
       test_framework_script: |
         cd $FRAMEWORK_PATH/flutter/packages/flutter
         ../../bin/flutter test --local-engine=host_debug_unopt