Merge "Consolidate clearing mImeInsetsFrozenUntilStartInput" into sc-v2-dev am: 42a9a04b9d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16375744

Change-Id: I1a5df14c2097195f47890a43b778c0380940682d