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.
import {
  processUpdateQueue,
  cloneUpdateQueue,
  initializeUpdateQueue,
} from './ReactUpdateQueue.old';
import {
  NoWork,
  Never,
  Sync,
  computeAsyncExpiration,
} from './ReactFiberExpirationTime.old';
import {
  ConcurrentMode,
  NoMode,
  ProfileMode,
  StrictMode,
  BlockingMode,
} from './ReactTypeOfMode';
import {
  shouldSetTextContent,
  shouldDeprioritizeSubtree,
  isSuspenseInstancePending,
  isSuspenseInstanceFallback,
  registerSuspenseInstanceRetry,
} from './ReactFiberHostConfig';
import type {SuspenseInstance} from './ReactFiberHostConfig';
import {shouldSuspend} from './ReactFiberReconciler';
import {pushHostContext, pushHostContainer} from './ReactFiberHostContext.old';
import {
  suspenseStackCursor,