Fix brightness settings while in Aura Sync

[netol19]

Falchion wireless keyboard. Before version 5.xx you could adjust brightness level (in 25% steps) while in Aura Sync mode. After version 5.xx update, the settings for adjusting are there, but they do nothing. In Keris mouse settings, they work.

I think I'm not the only one who would like to use Aura Sync mode while keeping brightness on lowest level for battery life.

[Terepin]

I concur. While pretty, the brightness on my Scope RX during night is an overkill, but there is no way to lower it while in Aura Sync.