No Grass Under Buildings 1.3.6

Space Elevator footprint fix

• Fixed the Space Elevator clearing vegetation across an enormous area because of its orbital actor bounds.
• Added a collision-derived footprint that follows its visible feet and supports rotated placement.
• Included a small vegetation-contact margin so leaning grass blades do not protrude into the feet.
• Embedded the tested footprint as a compact lookup table, eliminating runtime collision scans and their load-time delay.
• Preserved event-driven updates, nearby spatial filtering, and UObject-free tracking.