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.
Scheduler.unstable_yieldValue('Offscreen');
      return 'Offscreen';
    }
    function App({showContent}) {
      React.useLayoutEffect(() => {
        Scheduler.unstable_yieldValue('Commit');
      });
      return (
        <>
          <div hidden={true}>
            <Offscreen />
          </div>
          <Suspense fallback={<Text text="Loading..." />}>
            {showContent ? <AsyncText text="A" ms={2000} /> : null}
          </Suspense>
        </>
      );
    }
    
    ReactNoop.render(<App showContent={false} />);
    expect(Scheduler).toFlushAndYieldThrough(['Commit']);