Fix: recursive delete calls no longer use activePublish

[smlpt]

This should fix the slow deletion process for large groups of objects. Previously every child node deletion and every recursive call used activePublish = true, which slowed down sciview by a lot.

[ctrueden]

This looks good to me. My only question is whether the event that does get published, about the group deletion itself, has a way to know which nodes were deleted recursively. Presumably not. But maybe we don't care.

[smlpt]

Good question, but I'd also assume no.

And I tested this with the Protein you can add via the Add menu. The deletion is almost instant now.

[skalarproduktraum]

I'd agree that if it's known that the parent node is gone is enough 👍

[skalarproduktraum]

Thanks, @smlpt 👍