mobile: fix login ui flicker when keyboard change focus

apps/mobile/app/components/auth/auth-modal.js

@@ -91,6 +91,7 @@ const AuthModal = () => {
           width: "100%"
         }}
         keyboardShouldPersistTaps="handled"
+        enableAutomaticScroll={false}
       >
         {currentAuthMode !== AuthMode.login ? (
           <Signup

apps/mobile/app/components/auth/login.js

@@ -71,7 +71,7 @@ export const Login = ({ changeMode }) => {
     }, 5000);
   });
   const deviceMode = useSettingStore((state) => state.deviceMode);
-  const { width, height } = useWindowDimensions();
+  const { height } = useWindowDimensions();
   useEffect(() => {
     async () => {
       setStep(LoginSteps.emailAuth);