Fix potential failures in InputMethodService (2nd try)

It had the chance for calling into IMS but IMS
already destroyed.

Ideally we should suppress any callbacks after
InputMethodService#onDestroy() and log them.

First try is CL[1], but it wrongly add the API to
IInputMethod. Using the InputMethodServiceInternal
is make more sense for IInputMethodWrapper to
communicate with InputMethodService.

[1]: I10f26a92e739b60c5b8010e8476f8f5a403e0a7b

Bug: 121269861
Bug: 211062619
Bug: 148086656
Test: presubmit
Change-Id: I7b4f34eb38f44dea6872eb46866c9ad7dc1c185c