fix(bookings): client test failures after map overlay refactor

- Make useEndpointPane tolerant when map mock lacks getPane/createPane
- Add useMapEvents to react-leaflet mock in MapView.test
- Rewrite RESMODAL-042 to use the new AirportSelect flow (airline and
  flight number only; airport codes are now saved as endpoints, not
  metadata)

client/src/components/Map/MapView.test.tsx

@@ -32,6 +32,7 @@ vi.mock('react-leaflet', () => ({
     off: vi.fn(),
     panBy: vi.fn(),
   }),
+  useMapEvents: () => ({}),
 }))
 
 vi.mock('react-leaflet-cluster', () => ({