Simplify how video call layout is stored

src/routes/+layout.svelte

@@ -42,6 +42,7 @@
   import {syncKeyboard} from "@app/util/keyboard"
   import {getPageTitle} from "@app/util/title"
   import NewNotificationSound from "@src/app/components/NewNotificationSound.svelte"
+  import VideoCallLayoutViewportSync from "@app/components/VideoCallLayoutViewportSync.svelte"
 
   const {children} = $props()
 
@@ -229,5 +230,6 @@
     <ModalContainer />
     <div class="tippy-target"></div>
     <NewNotificationSound />
+    <VideoCallLayoutViewportSync />
   </div>
 {/await}