let TB layers marked as disabled discard their contents on map build, even if TB groups hierarchy disabled

[azur-wolve]

feature request

that would allow discard auxiliary layers used for prefabs, references, placeholder maps, etc

independently that if FuncGodotMapSettings.use_trenchbroom_groups_hierarchy is true or false

[RhapsodyInGeek]

I'm not against this proposal, but it's a pretty complicated ask. See this post here, as it's related:
#30 (comment)