fix: use suspense over loading.tsx

app/[lang]/(live)/@sitewidealert/loading.tsx

@@ -1,3 +0,0 @@
-export default function Loading() {
-  return null
-}

app/[lang]/(live)/@sitewidealert/page.tsx

@@ -1,3 +1,5 @@
+import { Suspense } from "react"
+
 import { env } from "@/env/server"
 
 import SitewideAlert, { preload } from "@/components/SitewideAlert"
@@ -11,7 +13,11 @@ export default function SitewideAlertPage({ params }: PageArgs<LangParams>) {
   }
 
   setLang(params.lang)
-  preload()
+  void preload()
 
-  return <SitewideAlert />
+  return (
+    <Suspense>
+      <SitewideAlert />
+    </Suspense>
+  )
 }