Breaking: #101292 - Strong-typed PropertyMappingConfigurationInterface 

See forge#101292

Description 

Extbase's PropertyMappingConfigurationInterface is now fully typed with native PHP types.

Impact 

Existing implementations will no longer work without adjustment. According to the Liskov Substitution Principle, all implementations must follow the updated method signatures and type restrictions defined in the interface.

Affected installations 

TYPO3 installations with custom PHP code implementing a custom PropertyMappingConfiguration are affected. Such cases are rare.

Migration 

Add the required native PHP types to all custom implementations of the PropertyMappingConfigurationInterface to fulfill the updated interface definition.