Add Tron logging for open/close App Disambig

This change adds
- Open/close the disambig shade with a featured app
- Open/close the disambig shade with no featured app
- User selected "Always" for the featured app
- User selected "Just Once" for the featured app
- User chose a non-featured app

Bug: 26108706
Change-Id: I4d2c99cee1a784aa1cab156939c57c83d35a4aa5