Ignore #setMediaButtonReceiverChangeEnabled() on Android U- devices

The compat change framework would try to enable the change ID gated on
V+ on a U device and fail silently.

Bug: 318476355
Bug: 272737196
Test: atest MediaSessionHostTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:b1120ba9d05f5a4e947256f0e4d06b3962b31e52)
Merged-In: Id9e7cdd0de15c3e728737ee02c5c3bd2d4a0dd58
Change-Id: Id9e7cdd0de15c3e728737ee02c5c3bd2d4a0dd58
2 files changed