Create a PR only if curly braces are present in the Branch name

Signed-off-by: Shreeya Patel <spatel@ciq.com>

Author: shreeya-patel98

.github/workflows/kernel-build-and-test-x86_64.yml

@@ -365,6 +365,15 @@ jobs:
     if: success() || failure()
 
     steps:
+    - name: Check if branch name contains curly brackets
+      run: |
+        BRANCH_NAME="${{ github.ref_name }}"
+        if [[ ! "$BRANCH_NAME" =~ \{ ]] || [[ ! "$BRANCH_NAME" =~ \} ]]; then
+          echo "Branch name '$BRANCH_NAME' does not contain curly brackets, skipping PR creation"
+          exit 1
+        fi
+        echo "Branch name contains curly brackets, proceeding with PR creation checks"
+
     - name: Check if tests passed and no regressions
       run: |
         # Skip PR if any test stage failed