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

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
fiber: Fiber,
  renderExpirationTime: ExpirationTime,
) {
  if (fiber.expirationTime < renderExpirationTime) {
    fiber.expirationTime = renderExpirationTime;
  }
  let alternate = fiber.alternate;
  if (alternate !== null && alternate.expirationTime < renderExpirationTime) {
    alternate.expirationTime = renderExpirationTime;
  }
  scheduleWorkOnParentPath(fiber.return, renderExpirationTime);
}
function propagateSuspenseContextChange(