Actually put feature flag

studio/pages/sign-in.tsx

@@ -14,7 +14,7 @@ const SignInPage: NextPageWithLayout = () => {
     <>
       <div className="flex flex-col gap-5">
         <SignInWithGitHub />
-        <SignInWithSSO />
+        {showSsoLogin && <SignInWithSSO />}
 
         <div className="relative">
           <div className="absolute inset-0 flex items-center">