docs(platform-webworker): mark all public APIs as deprecated (#33824)

In ccc76f749, `@angular/platform-webworker` and
`@angular/platform-webworker-dynamic` were deprecated (i.e. by
deprecating all their public APIs). However, some public
`@angular/platform-webworker` APIs were accidentally missed,
additionally resulting in the package itself not showing up as
deprecated on angular.io.

This commit fixes it by marking those remaining public APIs as
deprecated.

PR Close #33824

packages/platform-webworker/src/worker_render.ts

@@ -150,6 +150,7 @@ function initWebWorkerRenderPlatform(injector: Injector): () => void {
 
 /**
  * @publicApi
+ * @deprecated platform-webworker is deprecated in Angular and will be removed in version 10
  */
 export const platformWorkerUi =
     createPlatformFactory(platformCore, 'workerUi', _WORKER_UI_PLATFORM_PROVIDERS);