Fix restrict-task-creation workflow (#6105)

Author: TheJulianJES

.github/workflows/restrict-task-creation.yml

@@ -9,7 +9,7 @@ jobs:
   check-authorization:
     runs-on: ubuntu-latest
     # Only run if this is a Task issue type (from the issue form)
-    if: github.event.issue.issue_type == 'Task'
+    if: github.event.issue.type.name == 'Task'
     steps:
       - name: Check if user is authorized
         uses: actions/github-script@v7