Dispatch ProxyStatusChangedUI event after version check completes so the UI updates in real-time without requiring page refresh.
Changes:
- Add ProxyStatusChangedUI::dispatch() at all exit points in CheckTraefikVersionForServerJob
- Ensures UI refreshes automatically via WebSocket when version check completes
- Works for all scenarios: version detected, using latest tag, outdated version, up-to-date
User experience:
- User restarts proxy
- Warning clears automatically in real-time (no refresh needed)
- Leverages existing WebSocket infrastructure
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Co-Authored-By: Claude <noreply@anthropic.com>