message: docs(upgrade): add API docs for `propagateDigest`
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diff: @@ -46,6 +46,11 @@ interface Thenable<T> {
  * @param info contains information about the Component that is being downgraded:
  *
  * * `component: Type<any>`: The type of the Component that will be downgraded
  + * * `propagateDigest?: boolean`: Whether to perform {@link ChangeDetectorRef#detectChanges
  + * change detection} on the component on every
  + * [$digest](https://docs.angularjs.org/api/ng/type/$rootScope.Scope#$digest). If set to `false`,
  + * change detection will still be performed when any of the component's inputs changes.
  + * (Default: true)
  *
  * @returns a factory function that can be used to register the component in an
  * AngularJS module.
  