Pipe windowToken for hideSoftInput

Pipe the windowToken of the window requesting hideSoftInput just like we
did it for showSoftInput [1].
This calls hideInsets on the correct display when control target is
different from IME target e.g. ActivityView.
Also hideInsets should be called on InsetsControlTarget instead which was
originally attempted in [2]

[1]: Ia49e23dd077d264a58d28a7b8acffde54b7db187
[2]: I7133e151a1037c42b275b97857936437a7a6725f

Bug: 149870112
Bug: 133381284
Test: Manually using steps mentioned in bug.

Change-Id: Ia596a392eb73ae46debd097151c8c9a7edd59833