Before this cl, the KQS view is closed and reopened when the
overflow button and alt-tab key are triggered one after the other.
This cl changes the behavior so that instead of reopening, the
list of task is updated and the KQS container layout is toggled
between "wrap content" and "match parent".
Bug: 368119679
Test: open KQS via taskbar and observe the layout change
Flag: com.android.launcher3.taskbar_overflow
Change-Id: I05ea4c66727daa206ff1d7906500dc8f9cc81982
Wen-Chien Wang
ca95004403