message: don't submit BlobAttach if disposed
diff: @@ -1055,8 +1055,11 @@ export class ContainerRuntime extends TypedEventEmitter<IContainerRuntimeEvents>
  this.handleContext,
  blobManagerSnapshot,
  () => this.storage,
  - (blobId, localId) => this.submit(
  - ContainerMessageType.BlobAttach, undefined, undefined, { blobId, localId }),
  + (blobId, localId) => {
  + if (!this.disposed) {
  + this.submit(ContainerMessageType.BlobAttach, undefined, undefined, { blobId, localId });
  + }
  + },
  (blobPath: string) => this.garbageCollector.nodeUpdated(blobPath, "Loaded"),
  this,
  pendingRuntimeState?.pendingAttachmentBlobs,
  