this fixes minimap rendering for tg code

adds a new render pass, icon-smoothing-2025, which is a version of icon-smoothing that works with modern tg code (which removed corner smoothing)

also various other fixes for tg code - avoiding icon errors related to posters, crates, doors, closets, fire alarms, plants, etc

example renders of NebulaStation (latest tgstation master as of this PR, tgstation/tgstation@345185e) with this branch:

• NebulaStation-1.png
• NebulaStation-2.png

note: tg code does need to add this to SpacemanDMM.toml for dmm-tools minimap to work without extra arguments:

[map_renderer.render_passes]
icon-smoothing = false
icon-smoothing-2025 = true