Show a dialog after clicking on disabled widgets

When clicking on a disabled non-keyguard widget, show a dialog that
enables users to open settings and update whether to allow any widget
in hub mode.

Bug: b/324455650
Test: atest CommunalInteractorTest
Test: tap on disabled non-keyguard widgets and the dialog shows
Flag: ACONFIG com.android.systemui.communal_hub STAGING
Change-Id: I3a21193e703468613e21061bd2e1c8c5bbc3e7c7