message: Identify when the legacy API is used
  This would help better identify the targets for migrating away from the legacy API.
diff: @@ -1908,6 +1908,10 @@ export class ContainerRuntime extends TypedEventEmitter<IContainerRuntimeEvents>
  Array.isArray(pkg) ? pkg : [pkg], id, isRoot, props).realize();
  if (isRoot) {
  fluidDataStore.bindToContext();
  + this.logger.sendTelemetryEvent({
  + eventName: "Root datastore with props",
  + hasProps: props !== undefined,
  + });
  }
  return channelToDataStore(fluidDataStore, id, this, this.dataStores, this.mc.logger);
  }
  