cluster resources collector: replicasets output to wrong directory

[cbuto]

Bug Description

The cluster resources collector is writing replicaset resources to a directory called statefulsets-errors.json, instead of replicasets.

i.e.

├── statefulsets
│   ├── cert-manager.json
│   ├── default.json
│   ├── kube-node-lease.json
│   ├── kube-public.json
│   ├── kube-system.json
│   └── local-path-storage.json
├── statefulsets-errors.json # these are replicasets
│   ├── cert-manager.json
│   ├── default.json
│   ├── kube-node-lease.json
│   ├── kube-public.json
│   ├── kube-system.json
│   └── local-path-storage.json

This also causes issues if there is an error during statefulset collection and a file is created called statefulsets-errors.json.

i.e.

Error: failed to run collect and analyze process: create bundle file: failed to stat file: lstat /var/folders/j8/9dmckpr53fsgt2ttnjvc8x1h0000gn/T/supportbundle3684131245/support-bundle-2025-10-28T14_47_51/cluster-resources/statefulsets-errors.json/default.json: not a directory
Error: failed to run collect and analyze process: create bundle file: failed to stat file: lstat /var/folders/j8/9dmckpr53fsgt2ttnjvc8x1h0000gn/T/supportbundle3684131245/support-bundle-2025-10-28T14_47_51/cluster-resources/statefulsets-errors.json/default.json: not a directory

Expected Behavior

the cluster resource collector should output replicasets to a directory called replicasets.

Steps To Reproduce

1. Collect a support bundle kubectl support-bundle --auto
2. Open the tarball and look for the directory called statefulsets-errors.json
3. cat any json files in that directory and observe they are actually replicaset lists

cat cluster-resources/statefulsets-errors.json/default.json
{
  "kind": "ReplicaSetList",
  "apiVersion": "apps/v1",
  "metadata": {
    "resourceVersion": "233601"
  },
  "items": null
}

Additional Context

Include the following information.

• Troubleshoot version. If you built from source, note that including the version of Go you used to build with: Replicated Troubleshoot 0.123.11
• Operating system: MacOS
• Operating system version
• Other details that might be helpful in diagnosing the problem