feat: update signup and OTP verification forms to enhance error handling and state management

components/auth/signup-form.tsx

@@ -34,6 +34,9 @@ export default function SignUpForm() {
 
 	const [actionState, action, isPending] = React.useActionState(signup, {
 		message: "",
+		db_error: "",
+		errors: undefined,
+		payload: new FormData(),
 	});
 
 	React.useEffect(() => {