:index attribute not prepopulated in :dynamic-view

[tobias-hammerschmidt]

I interpret the documentation in https://github.com/soulspace-org/overarch/blob/main/doc/usage.md#dynamic-views-dynamic-view in such a way that relations in the :ct vector of the :dynamic-view should have their :index automatically set by the position within the vector and that this information is used in the c4 plantuml rendering. However with overarch 0.29.1 the ordering seems to be random and the only option to get the expected output is to provide the :index property explicitly for each relation. This is quite tedious especially if relations are added or removed or the order of the calls changes.