Fix unexpected hide IME cases

When testing testImeSwitchingWithoutWindowFocusAfterDisplayOffOnFull on
the virtual device, the test flows will be:
1) Launch an activity and click the editor to show IME
2) Turn off/on the screen
3) Launch the IME picker dialog and expecting no window focus change.
4) Switch to another IME app and expect the IME visible after switched.

Somehow the flaky point is in step 4) that if attaching the new input
to show the IME comes first, before the input target updated to WM,
in the meantime the app received onControlChanged
callback with null control from WMS#relayoutWindow, then in
ImeInsetsSourceConsumer#setControl -> hide() will end up calling
notifyImeHidden for IME to invoke hideMySoftInput(), which is
not expected result.

As this unexpected IME hidden issue is related the timing issue of
updating IME targets to WM a bit late and showing IME request happends
from IMMS instead of from ImeInsetsSourceConsumer#requestShow.
(i.e. consumer#hide() be invoked when mIsRequestedVisibleAwaitingControl
is false but the control is null when setControl called)

To fix this issue case, it looks make sense to check with
ImeInsetsSourceConsumer#isRequestedVisibleAwaitingControl() when the
null control callback in setControl(), since
isRequestedVisibleAwaitingControl() will be true when requested the IME
visible, so that it won't fall into hide() logic.

Also, modified "Animation finished abruptly." debug log in
InsetsAnimationControlImpl#applyChangeInsets to print only when the
animation actually finished, since it does not make sense to print
when the animation is not finish.

Fix: 204524304
Test: atest InputMethodServiceLifecycleTest#\
        testImeSwitchingWithoutWindowFocusAfterDisplayOffOnFull \
          --rerun-until-failure 100

Change-Id: I3071af14bf78e23f9526d6a9c138ab6ae2e0e339