Predelete event support

Entity Events don't support predelete event

The entity_events module currently supports insert, update, presave, and delete entity events, but lacks support for entity.predelete.

This issue proposes adding full support for entity.predelete, allowing developers to subscribe to the event and execute logic before an entity is deleted. This brings the module in line with the entity hook lifecycle and provides greater flexibility for use cases such as data cleanup, alias management, or dependency checks.