Add items in Other Sound directly into Sound settings.

- In new IA, Other Sound no longer is a separate preference screen, but
individual preferences are put directly under SoundSettings.

- Add controllers for each other sounds preference.

- Remove Cast settings from Soundsettings in new IA.

Change-Id: I75d771674ffabfecbd66079bc86844b2ff098b71
Fix: 33944294
Test: make RunSettingsRoboTests