Removing hide IME call onWindowLostFocus for STATE_ALWAYS_HIDDEN

The IME should only be hidden (for softInputMode == STATE_ALWAYS_HIDDEN), if IME focus changes, not window focus.

Fix: 378098975
Test: Show language picker in Chrome
Flag: EXEMPT refactor
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:1108597063eb998fb2fbf97cab2777a1808cfd5f)
Merged-In: Ife12ebd0337c21c41fd3226aa7b76fba9fb82485
Change-Id: Ife12ebd0337c21c41fd3226aa7b76fba9fb82485