Repro case with a master build: https://codesandbox.io/s/stoic-mcnulty-dhygf?file=/src/App.js:668-703

Expected: we see content after a second.
Actual: fallback never resolves.

This happens in a sequence of:

1. Normal update
   - which suspends
2. Idle update
   - which also suspends
3. An unrelated normal update immediately followed by a ping (so they're batched)
   - here, we decide to stay on fallback, but should've shown the content

If you remove `_setVersion(v => v + 1);` on line 44 then the issue goes away.
componentDidMount() {
          Scheduler.unstable_yieldValue(`Mount [${this.props.text}]`);
        }
        componentDidUpdate() {
          Scheduler.unstable_yieldValue(`Update [${this.props.text}]`);
        }
        render() {
          return <Text {...this.props} />;
        }
      }
      class AsyncTextWithLifecycle extends React.Component {