Default UI redesign (#7429)

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* Update default.sidebar.vue

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* Update sticky-sidebar.ts

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* Update messaging-room.form.vue

* Update timeline.vue

src/client/components/notes.vue

@@ -1,5 +1,5 @@
 <template>
-<div class="_list_">
+<div>
 	<div class="_fullinfo" v-if="empty">
 		<img src="https://xn--931a.moe/assets/info.jpg" class="_ghost"/>
 		<div>{{ $ts.noNotes }}</div>
@@ -15,7 +15,7 @@
 	</div>
 
 	<XList ref="notes" :items="notes" v-slot="{ item: note }" :direction="reversed ? 'up' : 'down'" :reversed="reversed">
-		<XNote :note="note" @update:note="updated(note, $event)" :key="note._featuredId_ || note._prId_ || note.id"/>
+		<XNote :note="note" class="_block _isolated" @update:note="updated(note, $event)" :key="note._featuredId_ || note._prId_ || note.id"/>
 	</XList>
 
 	<div v-show="more && !reversed" style="margin-top: var(--margin);">