Feature request: Styles on multiple XYZ axes.

[Gamekiller48]

Styles are incredibly useful for testing models.
You create a promt/negative prompt pair, save it as a style, and then can test it on various models using the XYZ plot.

What would make it truly incredible however was if we had the option to load multiple styles at once.

Example usecase:
You define a subject matter as a style, as well as a look as a style, like this:

Subject matter:
House:
Prompt: A house built in the Bauhaus architectural style, clean lines, minimalistic
Negative prompt: gothic, intricate

Person:
Prompt: A middle-aged man cleaning his motorcycle
Negative prompt: car, bad anatomy

Look:
Photo:
Prompt: photo taken on DSLR, RAW photography, HDR, filmgrain
Negative prompt: drawing, illustration, painting, cgi

Anime:
Prompt: anime illustration, lineart, digital painting, flat colours
Negative prompt: photo, realism, 3D

In the XYZ Plot you select "Styles" for both X and Y axis, but only put the subject matter styles on the X axis and the look styles on the Y axis, with whatever else you want to test on the Z axis.

Currently this doesn't work, as selecting Styles on two axes results in the first style being unloaded by the second axis.

[EllangoK]

You might have pulled already by now, but I fixed this a day before you wrote this message in #7285. Anyways it does currently work.