Introducing Manual DI for Overview

This CL adds the RecentsDependencyContainer to maintain singletons and dependencies related to RecentsView. RecentsDependencies is a singleton that requires the application context to be initialized. Unlike regular singletons, this class has an initialize function where it gets initialized and can be retrieved with getInstance without providing the appContext each time.

- We've updated the refactored classes behind the -enable_refactor_task_thumbnail flag to use this DI solution rather than relying on .parent or recreating dependencies.

- To inject dependencies, you can use RecentsDependencies.inject for lazy initialization or RecentsDependencies.get for eager initialization.

- At the moment, we don't have a singleton or factory definition. All dependencies created by RecentsDependencies will be stored in a specific scope, making the instance a singleton within that scope.

- You can create or retrieve a dependency in a particular scope by calling RecentsDependencies.inject(scopeId).

- If you don't need the dependency to be stored in RecentsDependencies, you can create it manually in your code and inject the necessary parameters from RecentsDependencies (see the viewModel in TaskOverlayHelper).

- Handling the cleaning/resetting of dependencies will be addressed in b/353917593. RecentsView lifecycle is more complex and doesn't get recreated every time. We need to determine which dependencies or scopes can be destroyed and recreated.

Fix: 349055024
Test: NONE
Flag: com.android.launcher3.enable_refactor_task_thumbnail
Change-Id: I27b92e3038f1cce0fd53b637dba5054c05b40283