Allow manual dispatch for publish-nightly (#4476)

Author: cte

.github/workflows/nightly-publish.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   publish-nightly:
     runs-on: ubuntu-latest
-    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    if: ${{ github.event_name == 'workflow_dispatch' || github.event.workflow_run.conclusion == 'success' }}
 
     permissions:
       contents: read # No tags pushed → read is enough.