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/moderation.vue

@@ -1,7 +1,5 @@
 <template>
-	<div
-		class="experimental-styles-within relative mx-auto mb-6 flex min-h-screen w-full max-w-[1280px] flex-col px-6"
-	>
+	<div class="relative mx-auto mb-6 flex min-h-screen w-full max-w-[1280px] flex-col px-6">
 		<h1>Moderation</h1>
 		<NavTabs :links="moderationLinks" class="mb-4 hidden sm:flex" />
 		<div class="mb-4 sm:hidden">