Add robot emoji to AI review comment for enhanced visibility

Author: LiteObject

.github/workflows/code-review.yml

@@ -130,5 +130,5 @@ jobs:
               owner: context.repo.owner,
               repo: context.repo.repo,
               issue_number: context.issue.number,
-              body: `### AI Review\n\n${review}`
+              body: `### 🤖 AI Review\n\n${review}`
             });