feat(api,userbot,frontend): search peers without chats and start tracking them

frontend/src/lib/components/MessageList.svelte

@@ -8,7 +8,7 @@
   import MessageBubble from "$lib/components/MessageBubble.svelte";
   import MessageVersions from "$lib/components/MessageVersions.svelte";
   import PinnedBar from "$lib/components/PinnedBar.svelte";
-  import EmptyState from "$lib/components/ui/EmptyState.svelte";
+  import TrackChat from "$lib/components/TrackChat.svelte";
   import Icon from "$lib/components/ui/Icon.svelte";
   import Spinner from "$lib/components/ui/Spinner.svelte";
   import { formatDay } from "$lib/format/datetime";
@@ -450,10 +450,7 @@
         {/each}
       </div>
     {:else if rows.length === 0}
-      <EmptyState
-        title="No messages"
-        description="This chat has no archived messages"
-      />
+      <TrackChat {chatId} />
     {:else}
       <div class="messages-container">
         {#if loadingOlder}