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.
Scheduler.unstable_yieldValue('Bar');
      return props.children;
    }
    function Foo() {
      Scheduler.unstable_yieldValue('Foo');
      return (
        <>
          <Suspense fallback={<Text text="Loading..." />}>
            <Bar>
              <AsyncText text="A" ms={100} />
              <Text text="B" />
            </Bar>
          </Suspense>
          <Text text="C" />
          <Text text="D" />
        </>
      );
    }
    ReactNoop.render(<Foo />);
    expect(Scheduler).toFlushAndYieldThrough([
      'Foo',
      'Bar',
      
      'Suspend! [A]',
      
      'B',
      'Loading...',
      'C',
      
    ]);