The event website registration process was reorganized so customizations can hook into the preparation step instead of replacing raw page output. This makes future tailored event registration changes easier and safer for implementers, without changing the standard user experience.

Since this controller returns raw markup, it is impossible to inherit.

By splitting the controller `registration_new`, allows to manage custom developments with the inheritance of the prepare method instead.


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Forward-Port-Of: odoo/odoo#244156

This update adjusts the Romanian tax reporting within the Enterprise module to align with recent changes in the Core Enterprise (CE) version. The update removes outdated tax codes and adds new ones, ensuring accurate reporting for Romanian businesses. This ensures compliance with current tax regulations.

Some taxes were no longer needed in CE, so they needed to be removed task-5411745

Forward-Port-Of: odoo/enterprise#108374
Forward-Port-Of: odoo/enterprise#106127