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.
const [text, _setText] = useState('A');
      setInnerText = _setText;
      
      useEffect(() => {
        if (text === outerText) {
          Scheduler.unstable_yieldValue('Commit Child');
        } else {
          Scheduler.unstable_yieldValue(
            'FIXME: Texts are inconsistent (tearing)',
          );
        }
      }, [text, outerText]);
      return (
        <>
          <AsyncText text={'Inner: ' + text + step} />
        </>
      );
    }
    
    function setText(text) {