Merge "Consolidate clearing mImeInsetsFrozenUntilStartInput" into sc-v2-dev am: 42a9a04b9d am: 540ad63eca

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

Change-Id: Ib506855eb2f5b20d1357661b871ebcfcb902cfd0