fix: loading error in signup

Fixed an error in which the loading state (button disabled) was completed before the sign up was completed

src/app/(auth)/sign-up/signup-form.tsx

@@ -104,6 +104,7 @@ export function SignUpForm() {
         if (result.status === "complete") {
           await setActive({ session: result.createdSessionId });
           setSignUpComplete(true);
+          return;
         }
       } catch (e) {
         console.error("Problem with the sign-in process");