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.
if (__DEV__) {
        workInProgress.type = Component = resolveClassForHotReloading(
          Component,
        );
      }
      child = updateClassComponent(
        null,
        workInProgress,
        Component,
        resolvedProps,
        renderExpirationTime,
      );
      return child;
    }
    case ForwardRef: {
      if (__DEV__) {
        workInProgress.type = Component = resolveForwardRefForHotReloading(
          Component,
        );
      }
      child = updateForwardRef(
        null,
        workInProgress,
        Component,
        resolvedProps,
        renderExpirationTime,
      );
      return child;
    }
    case MemoComponent: {