[Bug] Display an ERROR msg instead of success msg when the nacos connection test fails

### Nexent Version

v2.2.0

### Problem Description

<img width="1423" height="838" alt="Image" src="https://github.com/user-attachments/assets/b5b89008-3eab-4f95-977d-959eac54abad" />

### Reproduction Steps

_No response_

### Additional Information

_No response_