### 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_
while (fiber !== null) {
       G
      getOrGenerateFiberID(fiber);
      if (__DEBUG__) {
        debug('mountFiberRecursively()', fiber, parentFiber);
      }
       I
       A
      const mightSiblingsBeOnTrackedPath = updateTrackedPathStateBeforeMount(
        fiber,
      );
      const shouldIncludeInTree = !shouldFilterFiber(fiber);
      if (shouldIncludeInTree) {
        recordMount(fiber, parentFiber);
      }
      if (traceUpdatesEnabled) {
        if (traceNearestHostComponentUpdate) {
          const elementType = getElementTypeForFiber(fiber);
           I
          if (elementType === ElementTypeHostComponent) {
            traceUpdatesForNodes.add(fiber.stateNode);
            traceNearestHostComponentUpdate = false;
          }
        }
         W
         b
      }
      const isSuspense = fiber.tag === ReactTypeOfWork.SuspenseComponent;
      if (isSuspense) {
        const isTimedOut = fiber.memoizedState !== null;