[Audiosharing] Support sharing dialog when click media devices.

Instead of directly stop audio sharing, clicking on media devices will
lead to different sharing dialogs based on different scenarios. The
scenarios are align to cases when a new device is connected.

Test: atest
Bug: 305620450
Fix: 327259953
Change-Id: Ibb591cb1a59f31c8f0be4f3e72e45378b17e3809