FEATURE: Allow NodeAggregate based transformations on AggregateProperties and Properties with same value

[dlubitz]

To be able to restructure NodeTypes, we want to enable integrators to write node migrations based on property filter with NodeAggregate based transformations.

E.g:

comments: 'Migrate NodeType based on property value'
migration:
  - filters:
      - type: 'NodeType'
        settings:
          nodeType: 'Some.Old:NodeType'
      - type: 'PropertyValue'
        settings:
          propertyName: 'someProperty'
          serializedValue: true
    transformations:
      - type: 'ChangeNodeType'
        settings:
          newType: 'Some.New:NodeType'

Current behavior
At the moment this throws an error NodeAggregate Based transformations are only supported without any node based filters.

Targeted behavior
We want to implement an exception from this rule, which would allow to migrate NodeAggregates also on property based filters in following cases:

• The property in the filter is a AggregateProperty -> we know the value is the same for all nodes
• All properties are equal in all dimensions -> we can safely change the NodeType as all nodes have the same value in the filtered propery.

Releated to: #5190

Note: This was discussed in the developer weekly on 16.08.2024