Make waiting for review label sticky (#17891)

Co-authored-by: chiedo <chiedo@users.noreply.github.com>

.github/workflows/triage-stale-check.yml

@@ -27,6 +27,7 @@ jobs:
           stale-pr-message: 'This is a gentle bump for the docs team that this PR is waiting for review.'
           days-before-pr-stale: 14
           days-before-pr-close: -1 # Never close
+          remove-stale-when-updated: false
           only-labels: 'waiting for review'
           # The hope is that by setting the stale-pr-label to the same label
           # as the label that the stale check looks for, this will result in