message: Move the targetChangedEvent emitter to the defaultBuildTarget setter
diff: @@ -544,6 +544,7 @@ export abstract class CommonCMakeToolsBase implements api.CMakeToolsAPI {
  public set defaultBuildTarget(v: string|null) {
  this._defaultBuildTarget = v;
  this._statusBar.targetName = v || this.allTargetName;
  + this._targetChangedEventEmitter.fire();
  }
  /**
  @@ -719,7 +720,6 @@ export abstract class CommonCMakeToolsBase implements api.CMakeToolsAPI {
  const new_default = await this.showTargetSelector();
  if (!new_default) return;
  this.defaultBuildTarget = new_default;
  - this._targetChangedEventEmitter.fire();
  }
  public async setBuildTypeWithoutConfigure(): Promise<boolean> {
  