inputflinger: Restricted invalid MotionEvent button enum values

Fixes an issue by passing valid MotionEvent buttons through
NotifyMotionArgs() in FuzzedInputStream.h.

Added IfThisThenThat Lint to remind the actionButton to sync

Test: m frameworks/native/services/inputflinger/tests/fuzzers
Bug: 392345690
Flag: EXEMPT bugfix in fuzzer

Change-Id: I7c2108a255114b24e6544aa930696079e4f06b77