Changes to Retrieve embed user

the response property embedEntity became nullable for the status 200

the response property embedExternalId became nullable for the status 200

the response property active became required for the status 200

the response property displayName became required for the status 200

the response property emails became required for the status 200

the response property groups became required for the status 200

the response property id became required for the status 200

the response property meta became required for the status 200

the response property schemas became required for the status 200

the response property userName became required for the status 200

added the required property urn:omni:params:1.0:UserAttribute to the response with the 200 status

added the required property urn:omni:params:scim:schemas:extension:user:2.0 to the response with the 200 status