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.
]);
    await resolveText('B2');
    expect(Scheduler).toHaveYielded(['Promise resolved [B2]']);
    if (
      ReactFeatureFlags.deferPassiveEffectCleanupDuringUnmount &&
      ReactFeatureFlags.runAllPassiveEffectDestroysBeforeCreates
    ) {
      expect(Scheduler).toFlushAndYield([
        'B2',
        'Destroy Layout Effect [Loading...]',
        'Destroy Layout Effect [B]',
        'Layout Effect [B2]',
        'Destroy Effect [Loading...]',
        'Destroy Effect [B]',
        'Effect [B2]',
      ]);
    } else {
      expect(Scheduler).toFlushAndYield([
        'B2',
        'Destroy Layout Effect [Loading...]',
        'Destroy Effect [Loading...]',
        'Destroy Layout Effect [B]',
        'Layout Effect [B2]',
        'Destroy Effect [B]',
        'Effect [B2]',
      ]);
    }
  });
  it('suspends for longer if something took a long (CPU bound) time to render', async () => {
    function Foo({renderContent}) {