Update to use UDS Package keycloak 'protocolMappers' support

[ericwyles]

Describe what should be investigated or refactored

UDS added support for protocolMappers directly in the Package CRD under the sso spec in v0.27.0. Documentation here: https://uds.defenseunicorns.com/reference/configuration/uds-operator/

We should migrate to configuring protocolMappers directly in the package instead of using the "mapper-*" mappers in the "defaultClientScopes" (example).

Additional context

Doing this will eliminate a dependency on a specific version of uds-identity-config being used at cluster create time, and will allow the package to work properly on any version of UDS Core (>=0.27.0)