Support scim group patch call when only value attribute is present for members.

[ZiyamSanthosh]

Currently, we expect both display and value attributes to be present to update a group with a user during an add operation. With this implementation, the display attribute is made optional and a group can be updated with a user by providing the userId as the value for the value attribute.

Related issue:

• https://github.com/wso2/product-is/issues/16451

[jenkins-is-staging]

PR builder started Link: https://github.com/wso2/product-is/actions/runs/6098982753

[jenkins-is-staging]

PR builder completed Link: https://github.com/wso2/product-is/actions/runs/6098982753 Status: success

[nilasini]

Since the behavior is getting differ in different each product version can you arrange a review session?

[ZiyamSanthosh]

Since the behaviour has changed in the latest version of the product, this change is not required. Hence, closing the issue.