Steps to reproduce:

1. Create and open an empty project.
2. Select the Main Camera.
3. Click on the Field of View slider to make it the highlighted UI element.
4. Press the right or left arrow keys to change the slider value.

Actual results: The system plays an alert sound when changing the slider value with arrow keys.

Expected results: Changing the slider value with arrow keys does not play any sound.

Another reproduction case (requires numpad):

1. Tab through the UI elements in the Main Camera component and press numpad enter key on them. Toggles, dropdowns, etc. get activated but also produce the system alert sound.

Reproducible with versions: 
6000.0.5f1
2023.2.0f1

Not reproducible with versions: 
2023.1.0f1
2022.3.31f1
2021.3.39f1

Tested on (OS): MacOS (M1) 14.4.1

Notes:

• Did not test this on Windows, but Windows does not trigger alert sounds the same as on Mac, so I think this is only on Mac.
• This impacts accessibility.
• While functionally this method works, it is frustrating to hear this sound every time you modify the slider without a mouse.
• Other UI elements that were not tested might also be affected.