[automerger skipped] Fix kotlin nullable errors in Input tests am: e404308c52 -s ours am: fced5dca73 -s ours am: 7b5eb04dcc -s ours am: 2ac1c8a73b -s ours

am skip reason: Merged-In I35530e7ed63a647c39018ef0ee850ceea4dbc0ba with SHA-1 f3413858f1 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24722608

Change-Id: I7a9bcb3af689d7e9d9ab316582d358205530cded
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>