Incorrectly detected clusters

[kiemlicz]

Describe the bug

Contexts are displayed as clusters instead of clusters.

To Reproduce

Steps to reproduce the bug:

1. Load cluster
2. Choose file
3. load file with these contents

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: blabla
    server: https://address:6443
  name: k3s
contexts:
- context:
    cluster: k3s
    namespace: infra-flux
    user: default
  name: flux
- context:
    cluster: k3s
    namespace: home
    user: default
  name: home
- context:
    cluster: k3s
    namespace: infra-ingress
    user: default
  name: ingress
- context:
    cluster: k3s
    namespace: infra-kubevirt
    user: default
  name: kubevirt
- context:
    cluster: k3s
    namespace: infra-logging
    user: default
  name: logging
- context:
    cluster: k3s
    namespace: media
    user: default
  name: media
- context:
    cluster: k3s
    namespace: infra-metallb
    user: default
  name: metallb
- context:
    cluster: k3s
    namespace: infra-monitoring
    user: default
  name: monitoring
- context:
    cluster: k3s
    namespace: mosquitto
    user: default
  name: mosquitto
- context:
    cluster: k3s
    namespace: infra-openebs
    user: default
  name: openebs
current-context: home
kind: Config
preferences: {}
users:
- name: default
  user:
    client-certificate-data: blabla=
    client-key-data: blabla=

5. Each context is displayed as separate cluster whereas there is just a single cluster k3s

Environment (please provide info about your environment):

• Installation type: Linux-Tarball
• Headlamp Version: 0.25.1