User education support on disambiguation dialog

Support Accessibility education according to
1. Gesture Navigation is on or off
2. Screen reader feature (such as TalkBack) is enabled or not
Manual test screenshot: https://drive.google.com/open?id=1afTDRYPMcZphM5cL0krPDA_Vh9pRX-8x

Bug: 133811747
Test: Manual
Change-Id: I04ca36c9e88ff14e29103db41cfab2a9b53985d5