Revert "perf?(client): remove needless scoped annotation for style"

This reverts commit ada04c1932.

packages/frontend/src/components/MkEmojiPickerWindow.vue

@@ -1,6 +1,5 @@
 <template>
-<MkWindow
-	ref="window"
+<MkWindow ref="window"
 	:initial-width="null"
 	:initial-height="null"
 	:can-resize="false"
@@ -35,7 +34,7 @@ function chosen(emoji: any) {
 }
 </script>
 
-<style lang="scss">
+<style lang="scss" scoped>
 .omfetrab {
 	$pad: 8px;
 	--eachSize: 40px;