[PhysicalKeyboard] Update Setting Feature Provider for follow up usage

rename method in provider and usage, the provider is not activated now,
this change will not have impact on current feature.

Bug: 369937888
Test: atest packages/apps/Settings/tests/robotests/src/com/android/settings/inputmethod/
Flag: NONE, rename method, no effect on current feature.

Change-Id: I1bb66b106c338a8a8730bbd9163d6a921c17b9c0