DocblockVarArrayFromPropertyDefaultsRector should not add types when they are already defined on parent

[BackEndTea]

Bug Report

Subject	Details
Rector version	Rector 2.4.5

Minimal PHP Code Causing Issue

https://getrector.com/demo/bb986032-4313-4efd-9219-0df8144086b0

Expected Behaviour

Here the parent defines the types in its dockblocks already, so there is no need to define it again in the child class