Remove unnecessary final modifier from enum methods

Metalava removes `final` modifier from methods in `final` classes to
normalize the model, and ensure consistency as historically the
underlying Java/Kotlin parsing code was inconsistent in how it
handled implicit or inherited modifiers. Unfortunately, due to a bug
in Metalava that normalization was not applied to methods in an `enum`
class (which is itself implicitly `final`). That bug has been fixed
and this is updating the few places where that affected these signature
files.

Bug: 326310840
Test: m checkapi
(cherry picked from https://android-review.googlesource.com/q/commit:e98a86799edb7fd3e33b30923d0f6a80882f7cba)
Merged-In: I46ba44faafbabc7c08814e1b252947f4e4058ca4
Change-Id: I46ba44faafbabc7c08814e1b252947f4e4058ca4
1 file changed