message: Fix GeoJsonDataProvider caused by improper async usage in TilerService.
  Fixes
  Error: DataCloneError: Failed to execute 'postMessage' on
  'DedicatedWorkerGlobalScope': #<Promise> could not be cloned
  error cause introduced in
diff: @@ -61,7 +61,7 @@ export class TilerService extends WorkerService {
  request: WorkerTilerProtocol.TileRequest
  ): Promise<WorkerServiceResponse> {
  const tileKey = TileKey.fromMortonCode(request.tileKey);
  - const tile = this.tiler.getTile(request.index, tileKey);
  + const tile = await this.tiler.getTile(request.index, tileKey);
  return { response: tile || {} };
  }
  