Smoother Vignette through subtle noise

This could be a pretty simple thing to code IMO, but i dont code so what do i know.

anyways

You get visible banding on the gradients of a vignette if theres compression, right? (screenshot attatched)

the way to prevent this,  in after effects for example , is to add a layer of fractal noise. so my idea is maybe intergate a bit of fractal noise into the vignette tool to smooth out this gradients!

Thats it!

thank you for your time