Autoclick: Fix panel closing logic

Update to correct method for closing the panel on any outside
clicks.

ABTD run with 20 passing attempts: http://b/435284589#comment4

Bug: 435284589
Test: AutoclickPanelTests
Flag: com.android.server.accessibility.enable_autoclick_indicator
Change-Id: I31f42e775324ebbdff376dfb215a73b3eeac93a8