ci: generation of builds action can be triggered manually (aws#2157)

Co-authored-by: Laxman Reddy <[email protected]>

Author: manodnyab

.github/workflows/create-agent-standalone.yml

@@ -3,10 +3,12 @@ name: Create agent-standalone bundles
 on:
     push:
         branches: [main, feature/*, release/agentic/*]
+    workflow_dispatch:
 
 jobs:
     build:
         runs-on: ubuntu-latest
+        if: github.event_name == 'push' || github.actor_id == github.repository_owner_id
 
         steps:
             - name: Checkout repository