ci: Only run add-team-label test on PR (#171)

* Only run `add-team-label` test on PR

* Move check to avoid skipping all-jobs-complete

Author: Mrtenz

.github/workflows/test-add-team-label.yml

@@ -15,6 +15,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Test
+        if: ${{ github.event_name == 'pull_request' }}
         uses: ./.github/actions/add-team-label
         with:
           team-label-token: ${{ secrets.TEAM_LABEL_TOKEN }}