Fix invisible walls from WMO doodad M2 collision and MOPY filtering

WMO interior doodads (gears, decorations) were blocking player movement
via M2 collision. Skip collision for all WMO doodad M2 instances since
the WMO itself handles wall collision.

Also filter WMO wall collision using MOPY per-triangle flags: only
rendered+collidable triangles block the player, skipping invisible
collision hulls.

Revert tram portal extended range (no longer needed with collision fix).

include/rendering/wmo_renderer.hpp

@@ -409,6 +409,9 @@ private:
         // Pre-computed per-triangle normals (unit length, indexed by triStart/3)
         std::vector<glm::vec3> triNormals;
 
+        // Per-collision-triangle MOPY flags (indexed by collision tri index, i.e. triStart/3)
+        std::vector<uint8_t> triMopyFlags;
+
         // Scratch bitset for deduplicating triangle queries (sized to numTriangles)
         mutable std::vector<uint8_t> triVisited;