The cluster file name could not be found

## Bug Report
use command line tiup cluster list
The cluster name could not be found，
report :
[root@daastestvm62 logs]# tiup cluster list
tiup is checking updates for component cluster ...
A new version of cluster is available:
The latest version: v1.12.5
Local installed version: v1.12.3
Update current component: tiup update cluster
Update all components: tiup update --all

Starting component `cluster`: /root/.tiup/components/cluster/v1.12.3/tiup-cluster list
Name User Version Path PrivateKey
---- ---- ------- ---- ----------

### 1. Minimal reproduce step (Required)
delete include cluster name file ,maybe reproduce step

### 2. What did you expect to see? (Required)
How to repair a cluster, you can modify the cluster parameters by specifying the cluster name

### 3. What did you see instead (Required)

### 4. What is your TiDB version? (Required)
Release Version: v7.0.0

Release Version: v7.0.0
Edition: Community
Git Commit Hash: 7376954cd868dbc44fc3015c9ef89c53749339a7
Git Branch: heads/refs/tags/v7.0.0
UTC Build Time: 2023-03-29 13:32:13
GoVersion: go1.20.2
Race Enabled: false
TiKV Min Version: 6.2.0-alpha
Check Table Before Drop: false
Store: tikv