[Bug] When embedding model no set or checking connectivity, user won't be warned on clicking 'next step' button

[Jasonxia007]

Nexent Version

1.7.7

Problem Description

https://github.com/user-attachments/assets/6ebbc90e-5018-4fa8-a7f4-f15f44ae945a

Reproduction Steps

No response

Additional Information

No response