Root Cause: KeyboardSettingsPreferenceController override
handlePreferenceTreeClick() without checking the preference key, it will lead to handle all preferences' click action.
Solution: Check the preference is the expected preference key
Bug: 264017256
Test: make RunSettingsRoboTests ROBOTEST_FILTER=KeyboardSettingsPreferenceControllerTest
Change-Id: Idcdadc323df5b758b4b21329227e2bb721b1c394