Initialize ImsConfigurationTracker when IME#onCreate

To parse InputMethod_configChanges locally without waiting system
callback with initializeInternal, in case IME#mInputView may not
able to call resetStateForNewConfiguration in time before
IME#initializeInternal when it's required.

Fix: 260198823
Test: atest InputMethodServiceTest
Change-Id: I0268360f1b60ebc1f2676d3edab1910a9ce0f050