### 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_
if (pendingOperations.length === 0) {
         N
        return;
      }
       W
       b
       O
      const operations: OperationsArray = new Array(
        3 + pendingOperations.length,
      );
      operations[0] = rendererID;
      operations[1] = currentRootID;
      operations[2] = 0;  S
      for (let j = 0; j < pendingOperations.length; j++) {
        operations[3 + j] = pendingOperations[j];
      }
      flushOrQueueOperations(operations);
      pendingOperations.length = 0;
    }, 1000);
  }
  function reevaluateErrorsAndWarnings() {
    fibersWithChangedErrorOrWarningCounts.clear();
    fiberIDToErrorsMap.forEach((countMap, fiberID) => {
      const fiber = idToArbitraryFiberMap.get(fiberID);
      if (fiber != null) {
        fibersWithChangedErrorOrWarningCounts.add(fiber);
      }
    });
    fiberIDToWarningsMap.forEach((countMap, fiberID) => {
      const fiber = idToArbitraryFiberMap.get(fiberID);