Fix modal flash

src/app/components/ModalContainer.svelte

@@ -10,15 +10,9 @@
     }
   }
 
-  let modal: any = $state.raw()
   const hash = $derived($page.url.hash.slice(1))
   const hashIsValid = $derived(Boolean($modals[hash]))
-
-  $effect(() => {
-    if ($modals[hash]) {
-      modal = $modals[hash]
-    }
-  })
+  const modal = $derived($modals[hash])
 </script>
 
 <svelte:window onkeydown={onKeyDown} />