complete UI CSS ownership remediation

packages/ui/components/ButtonGroup.wrn

@@ -1,3 +1,5 @@
+import ComponentBaseStyles from "../styles/ComponentBaseStyles.wrn"
+
 component ButtonGroup {
   outputs {
     click(payload: { sourceEvent?: Event; [key: string]: string | number | boolean | null | object })
@@ -54,7 +56,7 @@ items: unknown[] = []
   view {
     <div
       {...attrs}
-      class="wire-next wire-next--button-group {class}"
+      class="wire-component wire-next--button-group {class}"
       role="{toolbar ? 'toolbar' : 'group'}"
       aria-label="{ariaLabel}"
       aria-orientation="{orientation}"
@@ -88,6 +90,7 @@ items: unknown[] = []
       {/if}
       <slot />
     </div>
+    <ComponentBaseStyles hidden />
   }
 
   style {