Issue: Allow OIDC custom claim names with special characters (e.g., URLs)

Issue: Allow OIDC custom claim names with special characters (e.g., URLs): a task in LegoFlow-SWE (Harbor dataset). Authelia refuses to start when a custom OIDC claim name contains special characters like colons or slashes. For example, attempting to use a claim identifier such as…

The task

Authelia refuses to start when a custom OIDC claim name contains special characters like colons or slashes. For example, attempting to use a claim identifier such as `http://example.com/myclaim` in the `custom_claims` map causes configuration parsing or validation to fail. Many standard OpenID Connect providers use…

Part of Lego-X/LegoFlow-SWE.