fix(ci): generate pubspec_overrides.yaml in lint_flutter to use local runanywhere package

The pubspec_overrides.yaml files are git-ignored (correct for publishing),
but CI needs them to resolve the `runanywhere` dependency from the monorepo
rather than pulling the stale published version from pub.dev. Generate them
at the start of the lint_flutter step before running flutter pub get.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: sanchitmonga22

.github/workflows/pr-build.yml

@@ -514,6 +514,18 @@ jobs:
         working-directory: sdk/runanywhere-flutter
         run: |
           set -e
+          # Generate pubspec_overrides.yaml for each sub-package so that
+          # `flutter pub get` resolves `runanywhere` from the local monorepo
+          # instead of the published version on pub.dev (which lags behind).
+          for pkg in packages/runanywhere_genie packages/runanywhere_llamacpp packages/runanywhere_onnx; do
+            if [ -f "$pkg/pubspec.yaml" ]; then
+              cat > "$pkg/pubspec_overrides.yaml" <<'OVERRIDES'
+dependency_overrides:
+  runanywhere:
+    path: ../runanywhere
+OVERRIDES
+            fi
+          done
           for pkg in packages/runanywhere packages/runanywhere_genie packages/runanywhere_llamacpp packages/runanywhere_onnx; do
             if [ -f "$pkg/pubspec.yaml" ]; then
               echo "=== Analyzing $pkg ==="