Repro: https://codesandbox.io/s/fast-water-4i4jb

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails react-core
 * @jest-environment node
 */
'use strict';
describe('React hooks DevTools integration', () => {
  let React;
  let ReactDebugTools;
  let ReactTestRenderer;
  let Scheduler;
  let act;
  let overrideHookState;
  let scheduleUpdate;
  let setSuspenseHandler;
  beforeEach(() => {
    global.__REACT_DEVTOOLS_GLOBAL_HOOK__ = {
      inject: injected => {
        overrideHookState = injected.overrideHookState;
        scheduleUpdate = injected.scheduleUpdate;
        setSuspenseHandler = injected.setSuspenseHandler;
      },
      supportsFiber: true,
      onCommitFiberRoot: () => {},
      onCommitFiberUnmount: () => {},
    };