Update ZenModeInteractor to return a ZenMode that blocks an audio stream

Flag: android.app.modes_ui
Bug: 372466264
Test: atest ZenModeInteractorTest
Test: atest AudioStreamSliderViewModel
Test: atest VolumePanelScreenshotTest
Test: manual on the phone. Open volume panel with an active mode
blocking different streams

Change-Id: I45f1e4859c8d5ac6e71d041989bb9a679b51c4dd