fix(components): improve generic types (#3331)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

docs/app/components/content/examples/breadcrumb/BreadcrumbCustomSlotExample.vue

@@ -1,9 +1,11 @@
 <script setup lang="ts">
+import type { BreadcrumbItem } from '@nuxt/ui'
+
 const items = [{
   label: 'Home',
   to: '/'
 }, {
-  slot: 'dropdown',
+  slot: 'dropdown' as const,
   icon: 'i-lucide-ellipsis',
   children: [{
     label: 'Documentation'
@@ -18,7 +20,7 @@ const items = [{
 }, {
   label: 'Breadcrumb',
   to: '/components/breadcrumb'
-}]
+}] satisfies BreadcrumbItem[]
 </script>
 
 <template>

docs/app/components/content/examples/breadcrumb/BreadcrumbSeparatorSlotExample.vue

@@ -1,5 +1,7 @@
 <script setup lang="ts">
-const items = [{
+import type { BreadcrumbItem } from '@nuxt/ui'
+
+const items: BreadcrumbItem[] = [{
   label: 'Home',
   to: '/'
 }, {