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.
state = {
          name: 'foo',
        };
        componentDidMount() {
          this.setState({
            name: 'bar',
          });
        }
        render() {
          return <Text text="Loading..." />;
        }
      }
      class Demo extends React.Component {