*Bug*

When a `textarea` has the `required` attribute it renders in the invalid state using FireFox. 

This behavior is visible here: https://codesandbox.io/s/rough-frog-f00ow. Remember to view it in FireFox.  

I expect the required field to validate on form submit and not before. 

I have tested this with FireFox 68 and 69 and React 16.8.6

This appears appears to be a re-occurrence of: https://github.com/facebook/react/issues/8395


import FixtureSet from '../../FixtureSet';
import TestCase from '../../TestCase';
const React = window.React;
export default class TextAreaFixtures extends React.Component {
  state = {value: ''};
  onChange = event => {
    this.setState({value: event.target.value});
  };
  render() {
    return (
      <FixtureSet title="Textareas">
        <TestCase
          title="Kitchen Sink"
          description="Verify that the controlled textarea displays its value under 'Controlled Output', and that both textareas can be typed in">