HHH-5289 remove unnecessary security checks in property accessors
Conflicts:
	hibernate-core/src/main/java/org/hibernate/internal/util/ReflectHelper.java
	hibernate-entitymanager/src/main/java/org/hibernate/jpa/event/internal/jpa/CallbackProcessorImpl.java
	hibernate-entitymanager/src/main/java/org/hibernate/jpa/event/internal/jpa/LegacyCallbackProcessor.java
	hibernate-entitymanager/src/main/java/org/hibernate/jpa/internal/metamodel/MetadataContext.java