### 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_
}
          formatted += `${key.toString()}: ${formatDataForPreview(
            data[key],
            false,
          )}`;
          if (formatted.length > MAX_PREVIEW_STRING_LENGTH) {
             Prev
            break;
          }
        }
        return `{${truncateForDisplay(formatted)}}`;
      } else {
        return '{…}';
      }
    case 'boolean':
    case 'number':
    case 'infinity':
    case 'nan':
    case 'null':
    case 'undefined':
      return data;
    default:
      try {
        return truncateForDisplay(String(data));
      } catch (error) {
        return 'unserializable';
      }
  }
}