fix: review fixes for v2026.5.0 release (#17350)

* fix/perf: NotificationManager in NoteCreateService

* fix: treat skip as successful return in InboxProcessorService

* chore: remove comment

* fix: simplify ReactionPicker/EmojiPicker by importing components directly

* refactor: move filename parsing to setup in MkUploaderItems

* refactor

packages/frontend/src/os.ts

@@ -194,7 +194,6 @@ export function popup<T extends Component>(
 
 	const id = ++popupIdCount;
 	const dispose = () => {
-		// このsetTimeoutが無いと挙動がおかしくなる(autocompleteが閉じなくなる)。Vueのバグ？
 		nextTick(() => {
 			popups.value = popups.value.filter(p => p.id !== id);
 		});