feat(web): add QueryErrorBoundary and use real map coordinates

Add global QueryErrorResetBoundary wrapping the app so TanStack Query
errors are caught with a retry UI instead of crashing. Enable
throwOnError in QueryClient defaults. Update ListingMap to use real
latitude/longitude from API when available, falling back to city-based
jitter for listings without coordinates.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/lib/listings-api.ts

@@ -64,6 +64,8 @@ export interface ListingDetail {
     legalStatus: string | null;
     amenities: string[] | null;
     projectName: string | null;
+    latitude: number | null;
+    longitude: number | null;
     media: PropertyMedia[];
   };
   seller: {