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.
workInProgress.expirationTime = Sync;
  } else if (isSuspenseInstanceFallback(suspenseInstance)) {
     
     
     
     
     
     
     
     
     
     
    const serverDisplayTime = requestCurrentTimeForUpdate();
     
    const newExpirationTime = computeAsyncExpiration(serverDisplayTime);
    if (enableSchedulerTracing) {
      markSpawnedWork(newExpirationTime);
    }
    workInProgress.expirationTime = newExpirationTime;
  } else {
     
     
    workInProgress.expirationTime = Never;
    if (enableSchedulerTracing) {
      markSpawnedWork(Never);
    }
  }
  return null;
}
function updateDehydratedSuspenseComponent(