### Website or app

https://codesandbox.io/s/react-playground-forked-j4niq

### Repro steps

Emoji seem supported but produce strange symbole

![image](https://user-images.githubusercontent.com/24865815/133793744-55a55582-90ad-425f-8a40-4c061a3c1d80.png)

To test emoji on Window Os, use `[win]+[.]` 🟩


### How often does this bug happen?

Every time

### DevTools package (automated)

_No response_

### DevTools version (automated)

_No response_

### Error message (automated)

_No response_

### Error call stack (automated)

_No response_

### Error component stack (automated)

_No response_

### GitHub query string (automated)

_No response_
const SuspendingComponent = () => {
        throw new Promise(() => {});
      };
      const Component = () => {
        return <div>Hello</div>;
      };
      const Wrapper = ({shouldSuspense}) => (
        <React.Fragment>
          <React.SuspenseList revealOrder="forwards" tail="collapsed">
            <Component key="A" />
            <React.Suspense fallback={<Loading />}>
              {shouldSuspense ? <SuspendingComponent /> : <Component key="B" />}
            </React.Suspense>
            <Component key="C" />
          </React.SuspenseList>
        </React.Fragment>
      );
      const container = document.createElement('div');
      const root = ReactDOM.createRoot(container);
      act(() => {
        root.render(<Wrapper shouldSuspense={true} />);
      });
      expect(store).toMatchSnapshot('1: loading');
      act(() => {
        root.render(<Wrapper shouldSuspense={false} />);
      });
      expect(store).toMatchSnapshot('2: resolved');
    });
    it('should support collapsing parts of the tree', () => {
      const Grandparent = ({count}) => (