ci(i18n): auto-bake note keys on template JSON changes in CI

Extends gp-backend-check.yml to trigger on starter_projects/** changes
and runs bake_note_keys.py before extract_backend_strings.py so any new
noteNodes get i18n_key stamped automatically on PR branches.

.github/workflows/gp-backend-check.yml

@@ -4,6 +4,7 @@ on:
   pull_request:
     paths:
       - "src/lfx/src/lfx/components/**"
+      - "src/backend/base/langflow/initial_setup/starter_projects/**"
 
 jobs:
   auto-commit:
@@ -22,6 +23,9 @@ jobs:
           ref: ${{ github.head_ref }}
           token: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Bake i18n_key into template noteNodes
+        run: python scripts/gp/bake_note_keys.py
+
       - name: Setup uv
         uses: astral-sh/setup-uv@v6
         with:
@@ -35,10 +39,11 @@ jobs:
       - name: Generate en.json
         run: uv run python scripts/gp/extract_backend_strings.py
 
-      - name: Commit updated en.json to PR branch if changed
+      - name: Commit updated files to PR branch if changed
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add src/backend/base/langflow/initial_setup/starter_projects/
           git add src/backend/base/langflow/locales/en.json
-          git diff --staged --quiet || git commit -m "chore: auto-regenerate backend locales/en.json [skip ci]"
+          git diff --staged --quiet || git commit -m "chore: auto-bake note keys and regenerate backend locales/en.json [skip ci]"
           git push