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.
let React;
let ReactFeatureFlags;
let Fragment;
let ReactNoop;
let Scheduler;
let Suspense;
let textCache;
let readText;
let resolveText;
let rejectText;
describe('ReactSuspenseWithNoopRenderer', () => {
  beforeEach(() => {
    jest.resetModules();
    ReactFeatureFlags = require('shared/ReactFeatureFlags');
    React = require('react');
    Fragment = React.Fragment;
    ReactNoop = require('react-noop-renderer');
    Scheduler = require('scheduler');
    Suspense = React.Suspense;
    textCache = new Map();
    readText = text => {
      const record = textCache.get(text);
      if (record !== undefined) {
        switch (record.status) {
          case 'pending':
            throw record.promise;
          case 'rejected':
            throw Error('Failed to load: ' + text);
          case 'resolved':
            return text;