ci: enable sticky comment for claude code review (unlock-protocol#16335)

Posts the review report as a sticky PR comment so it's visible in the
PR conversation, rather than only in the GitHub Actions job summary.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: julien51

.github/workflows/claude-code-review.yml

@@ -41,6 +41,7 @@ jobs:
           prompt: '/code-review:code-review ${{ github.repository }}/pull/${{ github.event.pull_request.number }}'
           allowed_tools: 'mcp__github_inline_comment__create_inline_comment,Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(git diff:*),Bash(git log:*),Bash(git show:*),Read,Glob,Grep'
           display_report: 'true'
+          use_sticky_comment: 'true'
           # See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
           # or https://code.claude.com/docs/en/cli-reference for available options