ci: prune unavailable simulators before running tests

Shared macOS runner accumulates orphaned simulator entries (registry
present, data dir missing on disk) which fail run_tests with 'Unable
to boot device because it cannot be located on disk'. Clean up before
every test run instead of requiring manual simctl intervention.

.gitea/workflows/test.yml

@@ -19,5 +19,8 @@ jobs:
             "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/archive/${{ github.sha }}.tar.gz"
           tar -xzf /tmp/repo.tar.gz --strip-components=1 -C "$GITHUB_WORKSPACE"
 
+      - name: Prune orphaned simulators (shared runner, avoids stale-UDID boot failures)
+        run: xcrun simctl delete unavailable || true
+
       - name: Run tests with coverage
         run: fastlane tests