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

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
setText('C');
      });
      expect(Scheduler).toHaveYielded(['Suspend! [C]', 'Loading...']);
      
      
      await ReactNoop.act(async () => {
        await advanceTimers(250);
      });
      
      
      
      expect(root).toMatchRenderedOutput(
        <>
          <span hidden={true} prop="B" />
          <span prop="Loading..." />
        </>,
      );
      
      await resolveText('D');
      await ReactNoop.act(async () => {
        setText('D');
      });
      
      
      expect(Scheduler).toHaveYielded(['D']);
      expect(root).toMatchRenderedOutput(<span prop="D" />);
    },
  );
});