message: make scope a class property of testhost and use it in clone method
diff: @@ -159,7 +159,7 @@ export class TestHost {
  private readonly componentRegistry: NamedComponentRegistryEntries,
  private readonly sharedObjectFactories: readonly ISharedObjectFactory[] = [],
  deltaConnectionServer?: ITestDeltaConnectionServer,
  - scope?: IComponent,
  + private readonly scope: IComponent = {},
  ) {
  this.deltaConnectionServer = deltaConnectionServer || TestDeltaConnectionServer.create();
  @@ -195,7 +195,8 @@ export class TestHost {
  return new TestHost(
  this.componentRegistry,
  this.sharedObjectFactories,
  - this.deltaConnectionServer);
  + this.deltaConnectionServer,
  + this.scope);
  }
  /**
  