fix(frontend): add blog admin preview route

src/app/admin/blog/[id]/preview/page.tsx

@@ -0,0 +1,8 @@
+import AdminBlogPreview from "@/views/AdminBlogPreview";
+
+type Params = Promise<{ id: string }>;
+
+export default async function AdminBlogPreviewPage({ params }: { params: Params }) {
+  const { id } = await params;
+  return <AdminBlogPreview postId={Number(id)} />;
+}