Update GitHub Actions workflow to trigger on pull request reviews and check for approval before running tests

Author: tech-sushant

.github/workflows/mcp-ci.yml

@@ -1,15 +1,13 @@
 name: Browserstack MCP CI
 
 on:
-  pull_request:
-    branches:
-      - main
-    types: [closed]
+  pull_request_review:
+    types: [submitted]
 
 
 jobs:
   test:
-    if: github.event.pull_request.merged == true
+    if: github.event.pull_request.base.ref == 'main' && github.event.review.state == 'approved'
     runs-on: ubuntu-latest
 
     strategy: