Community Tutorial: [C++] About the CreateAbstractDefaultSubobject Warning

When building with C++, using CreateAbstractDefaultSubobject triggers a warning,
so this is about how you can avoid it by using a different CreateDefaultSubobject instead.

https://dev.epicgames.com/community/learning/tutorials/dkya/unreal-engine-c-about-the-createabstractdefaultsubobject-warning