ACMS-3577: DAM integration with starterkit (low code) doesn't work as expected.

[deepakmishra2]

… expected.

Motivation

Fixes #ACMS-3577

Proposed changes updated attributes for media DAM

Testing steps follow from ticket

[deepakmishra2]

Add existing site test to verify that, image has alt text.

@vishalkhode1 i think we cannot write existing test in this case as when we do DAM authentication it takes to an external site and we cannot write test for an external site.