fmt does not preserve CSS property casing

[lts20050703]

Input:

@plugin "daisyui/theme" {
	name: "dark";
	prefersDark: true;
}

Output:

@plugin "daisyui/theme" {
  name: "dark";
  prefersdark: true;
}

Expected output:

@plugin "daisyui/theme" {
	name: "dark";
	prefersDark: true;
}

Why?

The upcoming version of DaisyUI (v5) now involve writing configurations in the CSS file. Some property is in camelCase and the casing needs to be preserved, otherwise it wouldn't work.

[dsherret]

cc @g-plane