Re-enable volume control for non-grouped devices Bug: 197586676 Bug: 202500642 Test: make -j50 RunSettingsRoboTests Merged-In: I7740d78f3a7dca62d64e6cf7b8c9ffa1578c8e74 Change-Id: I7740d78f3a7dca62d64e6cf7b8c9ffa1578c8e74 (cherry picked from commit b7f52f4468a1daa7408e44fafb362b54eec20897) Merged-In:I7740d78f3a7dca62d64e6cf7b8c9ffa1578c8e74