chore: clean up a bunch of legacy styles (#5973)

* remove unused experimental-styles-within

* remove unused styles

* more cleanup + prepr

* Refactor nearly all legacy buttons to use ButtonStyled

* prepr

* Update MC account selector to modern version

* prepr

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Co-authored-by: Calum H. <calum@modrinth.com>

apps/frontend/src/pages/report.vue

@@ -1,6 +1,6 @@
 <template>
 	<div class="page">
-		<div class="experimental-styles-within flex flex-col gap-2">
+		<div class="flex flex-col gap-2">
 			<RadialHeader class="top-box mb-2 flex flex-col items-center justify-center" color="orange">
 				<ScaleIcon class="h-12 w-12 text-brand-orange" />
 				<h1 class="m-3 gap-2 text-3xl font-extrabold">