fix(ci): change missed pull_request to pull_request_target (#2873)

Author: elysia-best

.github/workflows/issue_pr_comment.yml

@@ -78,7 +78,7 @@ jobs:
 
   pr-title-check:
     runs-on: ubuntu-latest
-    if: github.event_name == 'pull_request'
+    if: github.event_name == 'pull_request_target'
     steps:
       - name: Check PR title for required prefix and comment
         uses: actions/github-script@v9