Артур

type KnownKeys<T> = keyof { [P in keyof T as
    string extends P ? never : number extends P ? never : P
    ]: T[P]; };

type KeyToKeyNoIndex<T> = {
  [K in keyof T]: string extends K ? never : number extends K ? never : K;
};
type ValuesOf<T> = T extends { [K in keyof T]: infer U; } ? U : never;
export type KnownKeys<T> = ValuesOf<KeyToKeyNoIndex<T>>;

const [submited, setSubmited] = useState(false)
const handleSubmitForm = () => {
  setSubmited(true)
}
...
<form onSubmit={handleSubmitForm}>
  <input disabled={!submited} />
  <input disabled={!submited} />
</form>

$('.submit').click(function(e){
  e.preventDefault();
  $('.quiz').remove();
  $(thanks).appendTo('.container');
  disableButtons=true;
  $('.navigation__btn').addClass('navigation__btn--disabled')
  document.location = "http://ya.ru"
})