### 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_
act(() =>
          legacyRender(
            <React.Fragment>
              <ComponentWithError />
              <ComponentWithWarning />
              <ComponentWithWarningAndError />
            </React.Fragment>,
            container,
          ),
        );
      });
      expect(store).toMatchInlineSnapshot(`
        ✕ 2, ⚠ 2
        [root]
            <ComponentWithError> ✕
            <ComponentWithWarning> ⚠
            <ComponentWithWarningAndError> ✕⚠
      `);
      withErrorsOrWarningsIgnored(['test-only:'], () => {
        act(() =>
          legacyRender(
            <React.Fragment>
              <ComponentWithWarning />
              <ComponentWithWarningAndError />
            </React.Fragment>,
            container,
          ),
        );
      });
      expect(store).toMatchInlineSnapshot(`