fix(ci): remove draft check from PR RC workflow

Gitea Actions may not evaluate github.event.pull_request.draft
correctly, preventing the workflow from triggering entirely.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.mokogitea/workflows/pr-rc-release.yml

@@ -22,8 +22,6 @@ jobs:
   rc-release:
     name: Build RC Release
     runs-on: ubuntu-latest
-    if: github.event.pull_request.draft == false
-
     steps:
       - name: Checkout PR branch
         uses: actions/checkout@v4