fix: stabilize kumo ui components

modules/auth/components/SignOutButton.tsx

@@ -5,8 +5,13 @@ import { useRouter } from "next/navigation";
 import { useState } from "react";
 
 import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
 
-export function SignOutButton(): React.ReactElement {
+type SignOutButtonProps = {
+  className?: string;
+};
+
+export function SignOutButton({ className }: SignOutButtonProps): React.ReactElement {
   const router = useRouter();
   const [isPending, setIsPending] = useState(false);
 
@@ -25,6 +30,7 @@ export function SignOutButton(): React.ReactElement {
       onClick={handleSignOut}
       disabled={isPending}
       aria-label="退出登录"
+      className={cn(className)}
     >
       <LogOut className="size-4" aria-hidden="true" />
       <span className="hidden sm:inline">退出</span>