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.
current,
  workInProgress,
  renderExpirationTime,
) {
  const mode = workInProgress.mode;
  const nextProps = workInProgress.pendingProps;
  
  if (__DEV__) {
    if (shouldSuspend(workInProgress)) {
      workInProgress.effectTag |= DidCapture;
    }
  }
  let suspenseContext: SuspenseContext = suspenseStackCursor.current;
  let nextDidTimeout = false;
  const didSuspend = (workInProgress.effectTag & DidCapture) !== NoEffect;
  if (
    didSuspend ||
    shouldRemainOnFallback(
      suspenseContext,
      current,
      workInProgress,
      renderExpirationTime,
    )
  ) {
    
    
    nextDidTimeout = true;