Merge "Expose IME inset source control for testing" into tm-dev am: 65762373 am: ce4e576c am: c62df676

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18286156



Change-Id: I45e7d845b6cc18a2500470edb2b55a121f813fde
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>