### 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_
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  function recordMount(fiber: Fiber, parentFiber: Fiber | null) {
    const isRoot = fiber.tag === HostRoot;
    const id = getOrGenerateFiberID(fiber);
    if (__DEBUG__) {
      debug('recordMount()', fiber, parentFiber);
    }
    const hasOwnerMetadata = fiber.hasOwnProperty('_debugOwner');
    const isProfilingSupported = fiber.hasOwnProperty('treeBaseDuration');
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    let profilingFlags = 0;
    if (isProfilingSupported) {
      profilingFlags = PROFILING_FLAG_BASIC_SUPPORT;
      if (typeof injectProfilingHooks === 'function') {
        profilingFlags |= PROFILING_FLAG_TIMELINE_SUPPORT;
      }
    }
    if (isRoot) {
      pushOperation(TREE_OPERATION_ADD);
      pushOperation(id);