Revert "Removing insets controller animation as part of all-apps..."

Revert "Moving insets animation to StateHandler so that it can b..."

Revert submission 13810332-insetcontroller

Reason for revert: QsbLayout#getEditText() return object is changed, but extended class HotseatQsbWidget wasn't updated.

https://android-build.googleplex.com/builds/submitted/7197042/aosp_crosshatch-userdebug/latest/view/logs/build_error.log

Reverted Changes:
If6a088d14:Removing insets controller animation as part of al...
I296415604:Moving insets animation to StateHandler so that it...

Change-Id: I4eb33772acd887d6e1d92a9ecde41cf1e0687896