ci(lint): ensure linted results are pushed for build to pass (#25196)

.github/workflows/actions/test-core-lint/action.yml

@@ -18,3 +18,10 @@ runs:
       run: npm run lint
       shell: bash
       working-directory: ./core
+    # Lint changes should be pushed
+    # to the branch before the branch
+    # is merge eligible.
+    - name: Check Lint Results
+      run: git diff --exit-code
+      shell: bash
+      working-directory: ./core