### 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_
<Example />
              <Example />
            </React.Fragment>,
            container,
          ),
        );
      });
      expect(store).toMatchInlineSnapshot(`
        ✕ 2, ⚠ 2
        [root]
            <Example> ✕⚠
            <Example> ✕⚠
      `);
      const id = ((store.getElementIDAtIndex(1): any): number);
      const rendererID = store.getRendererIDForElement(id);
      const {
        clearWarningsForElement,
      } = require('react-devtools-shared/src/backendAPI');
      clearWarningsForElement({bridge, id, rendererID});
      // Flush events to the renderer.
      jest.runAllTimers();
      expect(store).toMatchInlineSnapshot(`
        ✕ 2, ⚠ 1
        [root]
            <Example> ✕⚠
            <Example> ✕
      `);
    });
    it('can be cleared for a particular Fiber (only errors)', () => {
      function Example() {