[ci] Use manual trigger for go_router_batch workflow for testing purposes

Author: chunhtai

.github/workflows/go_router_batch.yml

@@ -1,9 +1,11 @@
 name: "Creates Batch Release for go_router"
 
 on:
-  schedule:
-    # Run every Monday at 8:00 AM
-    - cron: "0 8 * * 1"
+  workflow_dispatch:
+  # Uncomment the cron schedule when ready.
+  # schedule:
+  #   # Run every Monday at 8:00 AM
+  #   - cron: "0 8 * * 1"
 
 jobs:
   dispatch_release_pr: