revert: ci(gha): limit privileged vrt workflow trigger branch base (#33760)

Author: Hotell

.github/workflows/pr-vrt-comment.yml

@@ -4,10 +4,6 @@ on:
     workflows: ['VRT CI']
     types:
       - completed
-    branches:
-      - master
-      # remove following once CRT testing is done
-      - vrt-gha-testing
 
 concurrency:
   # see https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#example-only-cancel-in-progress-jobs-or-runs-for-the-current-workflow