use pull_request_review_comment for comments in PR

Author: chernser

.github/workflows/claude-pr-triage.yml

@@ -2,7 +2,7 @@ name: PR Triage
 on:
   pull_request:
     types: [ ready_for_review, synchronize ]
-  issue_comment:
+  pull_request_review_comment:
     types: [created ]
 
 permissions:
@@ -22,7 +22,7 @@ jobs:
         github.event_name == 'workflow_dispatch' ||
         github.event_name == 'pull_request' || 
         (
-          github.event_name == 'issue_comment' &&
+          github.event_name == 'pull_request_review_comment' &&
           github.event.issue.pull_request != null &&
           github.event.sender.type != 'Bot' &&
           github.event.comment.user.type != 'Bot' &&