[AWS ECR] Not able To fetch private registry images from ECR

**Additional context**
Reproducible: Yes

Steps To Reproduce:

Login To Console
Add AWS Public Registry

Actual: No images information is being fetched on the registry page

**Is your feature request related to a problem? Please describe.**
Yes, we should be able to fetch the private registry from AWS ECR

**Components/Services**

- [x] API/Backend