CI: Enable PR action to check for proper code formatting

Author: mgehre-amd

.github/workflows/pr-code-format.yml

@@ -6,7 +6,6 @@ permissions:
 jobs:
   code_formatter:
     runs-on: ubuntu-latest
-    if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
         uses: actions/checkout@v4