### 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_
Se
          if (Array.isArray(entryOrEntries)) {
            const key = formatDataForPreview(entryOrEntries[0], true);
            const value = formatDataForPreview(entryOrEntries[1], false);
            formatted += `${key} => ${value}`;
          } else {
            formatted += formatDataForPreview(entryOrEntries, false);
          }
          if (formatted.length > MAX_PREVIEW_STRING_LENGTH) {
             Prev
            break;
          }
        }
        return `${name}(${data.size}) {${truncateForDisplay(formatted)}}`;
      } else {
        return `${name}(${data.size})`;
      }
    case 'opaque_iterator': {
      return data[Symbol.toStringTag];
    }
    case 'date':
      return data.toString();
    case 'object':
      if (showFormattedValue) {
        const keys = Array.from(getAllEnumerableKeys(data)).sort(alphaSortKeys);
        let formatted = '';
        for (let i = 0; i < keys.length; i++) {
          const key = keys[i];
          if (i > 0) {
            formatted += ', ';