Add Triage Label Delay (#40783)

This makes sure that authors have an opportunity to add a label before
the triage label gets added due to a lack of labels.

.github/workflows/triage-label.yml

@@ -1,11 +1,8 @@
 name: Add Triage Label
-
 on:
   issues:
     types: opened
-
 permissions: {}
-
 jobs:
   add_label:
     runs-on: ubuntu-20.04
@@ -14,7 +11,22 @@ jobs:
       issues: write
     steps:
       - uses: actions/checkout@v3
+      # We want to delay the labeling of the issue so that the author has a change to add labels after issue creation.
+      - name: 'Delay Labeling'
+        run: sleep 3m
+      # Make sure that the latest issue is pulled from the database rather than relying on the payload. This is
+      # because the payload won't include any labels that were added after the issue was created.
+      - uses: actions/github-script@v6
+        id: latest-issue
+        with:
+          script: |
+            const issue = await github.rest.issues.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number
+            });
+            core.setOutput('hasLabels', issue.data.labels.length > 0);
       - uses: actions-ecosystem/action-add-labels@v1
-        if: github.event.issue.labels[0] == null
+        if: ${{ steps.latest-issue.outputs.hasLabels == 'false'}}
         with:
           labels: 'status: awaiting triage'