ci: request review only at pr r4r (#14564)

.github/workflows/pr-reviews.yml

@@ -2,20 +2,24 @@
 name: Request review on PRs
 
 on:
-  pull_request:
+  pull_request_target:
     types:
       - opened
       - reopened
-
-permissions:
-  pull-requests: write
+      - ready_for_review
+    branches:
+      - "main"
+      - "releases/**"
 
 jobs:
   request:
+    permissions:
+      pull-requests: write
     name: Request reviews on opened PRs
     runs-on: ubuntu-latest
     steps:
       - name: Create PR review request
+        if: ${{ !github.event.pull_request.draft }}
         run: gh pr edit $PR_URL --add-reviewer @cosmos/sdk-core-review
         env:
           GH_TOKEN: ${{ secrets.PRBOT_PAT }}