Allow touches to pass through screenshot shelf view

Bug: 332410350
Bug: 329659738
Test: manual
Flag: ACONFIG com.android.systemui.screenshot_shelf_ui DEVELOPMENT
Change-Id: I47e07f87242273bd6463b01783c4b9fafa97e391
Merged-In: I47e07f87242273bd6463b01783c4b9fafa97e391
2 files changed