Issue #2948512 by malik.kotob, gabesullice, e0ipso: All resource configs loaded for each individual resource config

Issue #2946969 by e0ipso, mkolar, gabesullice, bmx269: Error: Call to a member function isInternal() on null (RelationshipNormalizerValue.php)

Issue #2946790 by gabesullice, mkolar, swentel, vtcore, e0ipso, PrineShazar: ConfigurableResourceTypeRepository does not call setRelatableResourceTypes()

Issue #2941095 by gabesullice, e0ipso: ResourceTypeRepository loads all configuration for every ->get($entity_type_id, $bundle)

Issue #2941481 by logickal, e0ipso: Breaking upstream JsonAPI module changes to ResourceTypeRepository

fix(Resource Repository): Fix regression in ConfigurableResourceTypeRepository::getResourceTypes (#2907429 by dawehner)

fix(Performance): Improve the performance of loading resource configs (#2907093 by dagmar, dawehner)