dependency list link for items with no children

[grahamdyson]

Items without children can't be opened as a subset and their boxes aren't links. Dependency lists include a link to open a subset regardless of if the item has children or not. This raises the following error:

Final item of subset identifier hierarchy "parent->child" has no child items.

[grahamdyson]

released in JavaScript 7.12.1

[grahamdyson]

released in C# 1.18.1