Brightness of 0 shall turn off the LED Display Module completely

[DocMoebiuz]

Is your feature request related to a problem? Please describe.
The brightness control allows to dim the displays. 0 however is very dim, and not completely turned off.

Describe the solution you'd like
It would be great to have the display turn off completely when brightness is 0.

Describe alternatives you've considered
We could leave it as it is and the user would have to create a config that turns it off with spaces and no decimal points.

Additional context
It is more user-friendly with the proposed solution.