Follow method renamings

This is a follow up CL to a recent CL [1], which deprecated several
APIs InputMethodManager class but forgot to update some of existing
call sites in InputMethodService to use new method names.

This CL only addresses deprecated API usage warnings.  There should be
no behavior change.

 [1]: I3163f3cbe557c85103ca287bee0874a3b4194032
      d8d03a8e

Bug: 70282603
Test: atest CtsInputMethodTestCases
Change-Id: I709ca997523ac9a9cd2d236f3158bbb18cf2edc3