When testing left/right speaker the sound is played from both

### What Happened?

Tried this in Demo mode on elementary daily.
Tried to test left and right speakers in Test popover. But sound comes from both speakers.

### Steps to Reproduce

1. Open popover
2. Click on left or right test button

### Expected Behavior

Sound should come only from left or right speaker.

### OS Version

8.x (Early Access)

### Session Type

Classic Session (X11, This is the default)

### Software Version

Latest release (I have run all updates)

### Log Output

_No response_

### Hardware Info

_No response_