Quick "loading" messages when opening settings making page to "blink"

[Mazuh]

STR:

• Login.
• Enable both camera and microphone.
• Open settings.

Observe:

• Page "blinks" for a moment.

Expected:

• Page not appear to "blink".

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A few technical comments.

It's not really blinking, but moving too quickly for human eyes (depending on the hardware, I suppose). There's a quick loading message (a few milliseconds) showing up on background component while the modal on foreground is trying to load the camera/video preview. And as the state is shared, loading the device on modal makes reactions on background too.

Maybe there's no need to fetch the devices again? Or hide loading until it's taking too long? Idk.