This change adds in desktop tasks to show up in the Manage Windows
Taskbar menu. Previously these were getting filtered out.
Fix: 380167542
Bug: 315989246
Test: Launch multiple tasks in desktop mode and see that they show up in
the multi instance viewer from the Taskbar menu
Flag: com.android.launcher3.enable_multi_instance_menu_taskbar
Change-Id: Ia07b3ad68f43c0f121b0608c5341d50970c8af4c
Saumya Prakash
a32f7f3f4a