fix: let pull_request_review_comment events through unconditionally

Forgejo's pull_request_review_comment event does not populate
github.event.comment.body in the workflow context (it's always
empty), so the contains() check never matches. The action code
does its own trigger phrase validation, so it's safe to let these
events through based on event name alone.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.forgejo/workflows/claude.yml

@@ -46,7 +46,7 @@ jobs:
   claude:
     if: |
       (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
-      ((github.event_name == 'pull_request_review_comment' || github.event_name == 'pull_request_comment') && contains(github.event.comment.body, '@claude')) ||
+      (github.event_name == 'pull_request_review_comment' || github.event_name == 'pull_request_comment') ||
       (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
       (github.event_name == 'issues' && (
         github.event.action == 'labeled' ||