Optimize quality check trigger in Github Actions

Simplified the trigger configuration for Quality Checks in quality.yaml. It's now set to run on both 'push' and 'pull_request' events to ensure lint validation occurs not only when changes are pushed but also during pull requests to the repository, improving code stability and reliability.

.github/workflows/quality.yaml

@@ -12,9 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 name: Quality Checks
-on:
-  push: {}
-  pull_request: {}
+on: push
 jobs:
   flake8-lint:
     name: Lint Validation