### Website or app

https://github.com/reactjs/reactjs.org/pull/4981

### Repro steps

1. Wrap something into `<Fragment key="stuff">`
2. It doesn't show up in DevTools

We filter out fragments because they tend to be useless. But this one is important! Keys are crucial and we should show anything with a key in the tree.

### 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_
and give React time to process the Fast Refresh delay.
    untrackFibersSet.add(fiber);
     React may detach alternate pointers during unmount;
     Since our untracking code is async, we should explicily track the pending alternate here as well.
    const alternate = fiber.alternate;
    if (alternate !== null) {
      untrackFibersSet.add(alternate);
    }
    if (untrackFibersTimeoutID === null) {
      untrackFibersTimeoutID = setTimeout(untrackFibers, 1000);
    }
  }
  const untrackFibersSet: Set<Fiber> = new Set();
  let untrackFibersTimeoutID: TimeoutID | null = null;
  function untrackFibers() {
    if (untrackFibersTimeoutID !== null) {
      clearTimeout(untrackFibersTimeoutID);
      untrackFibersTimeoutID = null;
    }
    untrackFibersSet.forEach(fiber => {
      const fiberID = getFiberIDUnsafe(fiber);
      if (fiberID !== null) {
        idToArbitraryFiberMap.delete(fiberID);
         A
        clearErrorsForFiberID(fiberID);
        clearWarningsForFiberID(fiberID);
      }
      fiberToIDMap.delete(fiber);
      const {alternate} = fiber;
      if (alternate !== null) {