Use TouchMonitor for touch handling over hub

This change swaps from simply allowing touches that start at the top
or bottom of the glanceable hub parent view to fall through in order
to open the notification shade and bouncer to using the same
TouchMonitor interception as the dream uses.

Bug: 328838259
Bug: 335505186
Test: atest GlanceableHubContainerController
      verified manually, see video on bug
Flag: ACONFIG com.android.systemui.communal_hub TEAMFOOD
Change-Id: I31a55ca141d2df00c73b00740ac909c27268a375