Increase number of triggers for taskData reloading in TasksRepository

- Simplified AbsSwipeUpHandler.switchToScreenshot to remove the unused refreshView=false parameter, so we RecentsView.updateThumbnail don't need to return a TaskView
- Changed TasksRepository.setThumbnailOverride to addThumbnailOverride, that'll accumulate overrides being sent to it
- Handled RecentsView.updateThumbnail to add an override to TasksRepository
- visibleTaskIds being sent to TasksRepository now take acccount of fileering out mTmpRunningTasks
- Updated a few TODOs around thumbnail/icon reloading

Bug: 342560598
Test: TasksRepositoryTest
Flag: com.android.launcher3.enable_refactor_task_thumbnail
Change-Id: Ia892819c45f20e82fbda275fd0e39081d6362cb6