* Updated management API endpoint and model for data type references to align with that used for documents, media etc. * Refactoring. * Update src/Umbraco.Core/Constants-ReferenceTypes.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Fixed typos. * Added id to tracked reference content type response. * Updated OpenApi.json. * Added missing updates. * Renamed model and constants from code review feedback. * Fix typo * Fix multiple enumeration --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Co-authored-by: mole <nikolajlauridsen@protonmail.ch>