Improve test, don't fail when version hasn't been bumped

.github/workflows/test_patches_merged.yml

@@ -1,6 +1,9 @@
 name: Test Patches Merged
 
 on:
+  pull_request:
+    branches:
+      - mainline
   push:
     branches:
       - mainline
@@ -30,13 +33,20 @@ jobs:
 
       - name: Verify fast-forward merge possible
         run: |
-          git fetch origin "releases/${{ steps.version.outputs.prev_minor }}"
-          MERGE_BASE=$(git merge-base origin/mainline "origin/releases/${{ steps.version.outputs.prev_minor }}")
-          RELEASE_HEAD=$(git rev-parse "origin/releases/${{ steps.version.outputs.prev_minor }}")
+          # Try to fetch current version branch first
+          if git fetch origin "releases/${{ steps.version.outputs.current_version }}" 2>/dev/null; then
+            BRANCH_TO_CHECK="releases/${{ steps.version.outputs.current_version }}"
+          else
+            BRANCH_TO_CHECK="releases/${{ steps.version.outputs.prev_minor }}"
+            git fetch origin "$BRANCH_TO_CHECK"
+          fi
+          
+          MERGE_BASE=$(git merge-base origin/mainline "origin/$BRANCH_TO_CHECK")
+          RELEASE_HEAD=$(git rev-parse "origin/$BRANCH_TO_CHECK")
           
           if [ "$MERGE_BASE" = "$RELEASE_HEAD" ]; then
-            echo "✅ Release branch is fast-forward mergeable into mainline"
+            echo "✅ Release branch $BRANCH_TO_CHECK is fast-forward mergeable into mainline"
           else
-            echo "❌ Release branch is not fast-forward mergeable into mainline"
+            echo "❌ Release branch $BRANCH_TO_CHECK is not fast-forward mergeable into mainline"
             exit 1
           fi