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

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
enterHydrationState,
  reenterHydrationStateFromDehydratedSuspenseInstance,
  resetHydrationState,
  tryToClaimNextHydratableInstance,
  warnIfHydrating,
} from './ReactFiberHydrationContext';
import {
  adoptClassInstance,
  applyDerivedStateFromProps,
  constructClassInstance,
  mountClassInstance,
  resumeMountClassInstance,
  updateClassInstance,
} from './ReactFiberClassComponent';
import {resolveDefaultProps} from './ReactFiberLazyComponent';
import {
  resolveLazyComponentTag,
  createFiberFromTypeAndProps,
  createFiberFromFragment,
  createWorkInProgress,
  isSimpleFunctionComponent,
} from './ReactFiber';
import {
  markSpawnedWork,
  requestCurrentTimeForUpdate,
  retryDehydratedSuspenseBoundary,
  scheduleUpdateOnFiber,
  renderDidSuspendDelayIfPossible,
  markUnprocessedUpdateTime,
  getWorkInProgressRoot,