[Audiosharing] Update audio sharing section title in call

In call mode, change title "Active media devices" to "Call devices",
also allow device click to switch active.

Test: atest
Bug: 355222285
Flag: com.android.settingslib.flags.enable_le_audio_sharing
Change-Id: I8195934f19de534d07f5a655aac17d6966ae6f32