text: Title: [UX] Not showing `sky stop` cli hint for cloud that does not support stop
  Body: <!-- Describe the bug report / feature request here -->
  
  Currently, we still shows `sky stop <cluster-name>` even if the cloud does not support stop (e.g. Lambda). We should remove this hint.
  
  ```bash
  📋 Useful Commands
  Job ID: 1
  ├── To cancel the job:          sky cancel lmd 1
  ├── To stream job logs:         sky logs lmd 1
  └── To view job queue:          sky queue lmd
  
  Cluster name: lmd
  ├── To log into the head VM:    ssh lmd
  ├── To submit a job:            sky exec lmd yaml_file
  ├── To stop the cluster:        sky stop lmd
  └── To teardown the cluster:    sky down lmd
  ```
  
  
  