Feature: #111134 - Allow #[IgnoreValidation] on Extbase properties 

Description 

The PHP attribute \TYPO3\CMS\Extbase\Attribute\IgnoreValidation can now be applied to properties of Extbase domain models, in addition to action parameters of controller methods.

A property marked with #[IgnoreValidation] is excluded from the validation of its model completely: Extbase neither creates the validators it would generate automatically for properties typed as another model or as a collection, nor does it apply validators declared with #[Validate] or with Symfony constraint attributes on that property. This is the same meaning #[IgnoreValidation] has on action parameters.

use TYPO3\CMS\Extbase\Attribute\IgnoreValidation;

class Product extends AbstractEntity
{
    #[IgnoreValidation]
    protected ?Category $category = null;
}

Excluding a property from validation is independent of its persistence. Whether a property is persisted is decided by the TCA: Extbase only maps properties that have a matching column. #[Transient] is not needed for either purpose.

Impact 

Extension authors can exclude single model properties from validation, for example model-typed properties without accessor methods, without having to mark them as transient.

Extensions that support TYPO3 v13.4, v14 and v15 can carry both attributes on a property. Extbase in TYPO3 v13.4 and v14 does not evaluate unknown property attributes, so #[IgnoreValidation] is simply ignored there, while #[Transient] keeps skipping the validator.