Merge "Fix ANR when switching the app task but IME selection dialog focused"...

Merge "Fix ANR when switching the app task but IME selection dialog focused" into sc-dev am: 1181f3e9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15398716

Change-Id: Ib9ff638ecba68afd01a9a74d2cd8a6b507d94445