Show popup message after dismissing the CTA tile

After dismissing the CTA tile from GH view mode, show a popup
with a tutorial message for 12 seconds then auto hide. Click
event on the screen will hide the popup immediately.

Bug: b/313462210
Flag: ACONFIG com.android.systemui.communal_hub DEVELOPMENT
Test: atest CommunalInteractorTest
Change-Id: I602a443beb0f8b0ab3261e5aa4a295be93a4cba7