Fix zoomDefault on count up

src/lib/components/Reader/MangaPage.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
   import type { Page } from '$lib/types';
-  import { afterUpdate, onMount } from 'svelte';
+  import { afterUpdate, onMount, onDestroy } from 'svelte';
   import TextBoxes from './TextBoxes.svelte';
   import { zoomDefault } from '$lib/panzoom';
 
@@ -11,6 +11,12 @@
 
   onMount(() => {
     zoomDefault();
+
+    return () => {
+      setTimeout(() => {
+        zoomDefault();
+      }, 10);
+    };
   });
 
   afterUpdate(() => {

src/lib/components/Reader/Reader.svelte

@@ -202,21 +202,6 @@
       }
     }
   }
-
-  let shouldUpdate = false;
-
-  function handleUpdate() {
-    shouldUpdate = true;
-  }
-
-  $: volumeSettings.singlePageView && handleUpdate();
-
-  afterUpdate(() => {
-    if (shouldUpdate) {
-      shouldUpdate = false;
-      zoomDefault();
-    }
-  });
 </script>
 
 <svelte:window