- connect GetWorld() of FStateTreeExecutionContext explicitly to the owner
- take MassSignalSubsystem as parameter to FMassStateTreeExecutionContext directly
- separated DataViewIndex (what others see) and InstanceIndex/bInstanceIsObject (where the pointert comes from) on StateTree items
- allow item instance to be a struct or object
- added editor support for both struct or object based instance
- added Blueprint base classes for Eval, Task and Condition
- Update UStateTreeBrainComponent
#jira UE-135723
#review-18267822
#robomerge 5.0
[CL 18280804 by mikko mononen in ue5-main branch]
