Description: Port currently lowercases the Entra ID UPN / email when creating the _user entity, so John.Smith@company.com is stored as john.smith@company.com, and _user.identifier cannot be edited manually. Customers who pass user details downstream through self-service actions and workflows to populate case-sensitive RBAC in other systems (for example ArgoCD and Kubernetes) need the original UPN casing, so we request that Port preserve it, either in _user.identifier or in a separate property on the _user blueprint.

Customer impact: users cannot log in to kubectl and ArgoCD because of the casing mismatch. The current workaround is a separate Entra ID integration that stores userPrincipalName with its original casing.