Merge "Invoke IME switcher for taskbar through SysUI" into sc-v2-dev am: 04d52b48ac

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16149981

Change-Id: I8e46d5d41e950a9b913f9f6060aaa08bb11629c1