bug: Admin portal mentor list is not displaying the image of the mentor

Mentor profile displays the image properly:

<img width="1188" height="724" alt="Image" src="https://github.com/user-attachments/assets/e52cd8de-d096-4d6f-8d17-54d19abd1cf4" />

But the image is not displayed in the mentor's list:

<img width="1128" height="412" alt="Image" src="https://github.com/user-attachments/assets/1dd01f15-237b-419e-afdf-bb5c6eaea329" />