Upgrade: Tailwind v4 (#5246)

* temp: move tailwind calls out of the layer

* temp: ts tailwind config

* upgrade: Tailwind v4
This got a little out of hand.
Had to add a relative reference to the stylesheet in any component that uses @apply instead of the utility classes directly.

* upgrade: bg-opacity is now a modifier

* fix: Classic menu buttons assume a border

* Update test expectations [skip ci]

* fix: New preflight removal pattern

* fix: Skeletons don't have skin

* Update test expectations [skip ci]

* fix: Missing @reference

* [auto-fix] Apply ESLint and Prettier fixes

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Co-authored-by: GitHub Action <action@github.com>

src/components/breadcrumb/SubgraphBreadcrumbItem.vue

@@ -36,7 +36,7 @@
     v-if="isEditing"
     ref="itemInputRef"
     v-model="itemLabel"
-    class="fixed z-[10000] text-[.8rem] px-2 py-2"
+    class="fixed z-10000 text-[.8rem] px-2 py-2"
     @blur="inputBlur(true)"
     @click.stop
     @keydown.enter="inputBlur(true)"
@@ -211,6 +211,8 @@ const inputBlur = async (doRename: boolean) => {
 </script>
 
 <style scoped>
+@reference '../../assets/css/style.css';
+
 .p-breadcrumb-item-link,
 .p-breadcrumb-item-icon {
   @apply select-none;