Updates method names according to API review in BluetoothHapClient

To compliance with API review guideline, change support* methods name to
supports* with s at the end. Updates the calling method signatures in
SettingsLib.

Bug: 261021330
Test: make RunSettingsLibRoboTests ROBOTEST_FILTER=HapClientProfileTest
Change-Id: I14b4bd3f5814491d67761ffdd83fa7a87241f50e