[PM-16211] chore(ci): Fix hotfix branch creation workflow by retrieving the last tag across all branches (#4491)

Author: vvolkgang

.github/workflows/release-branch.yml

@@ -10,10 +10,6 @@ on:
         options:
           - RC
           - Hotfix
-      rc_prefix_date:
-        description: 'RC - Prefix with date. E.g. 2024.11-rc1'
-        type: boolean
-        default: true
 
 jobs:
   create-release-branch:
@@ -30,7 +26,7 @@ jobs:
       - name: Create RC Branch
         if: inputs.release_type == 'RC'
         env:
-          RC_PREFIX_DATE: ${{ inputs.rc_prefix_date }}
+          RC_PREFIX_DATE: "true" # replace with input if needed
         run: |
           if [ "$RC_PREFIX_DATE" = "true" ]; then
             current_date=$(date +'%Y.%m')
@@ -46,12 +42,17 @@ jobs:
       - name: Create Hotfix Branch
         if: inputs.release_type == 'Hotfix'
         run: |
-          latest_tag=$(git describe --tags --abbrev=0)
+          latest_tag=$(git tag -l --sort=-creatordate | head -n 1)
           if [ -z "$latest_tag" ]; then
             echo "::error::No tags found in the repository"
             exit 1
           fi
           branch_name="release/hotfix-${latest_tag}"
+          echo "🌿 branch name: $branch_name"
+          if git show-ref --verify --quiet "refs/remotes/origin/$branch_name"; then
+            echo "# :fire: :warning: Hotfix branch already exists: ${branch_name}" >> $GITHUB_STEP_SUMMARY
+            exit 0
+          fi
           git switch -c $branch_name $latest_tag
           git push origin $branch_name
           echo "# :fire: Hotfix branch: ${branch_name}" >> $GITHUB_STEP_SUMMARY