dispose physics on remove

src/world/physics.service.ts

@@ -88,6 +88,10 @@ export class PhysicsService {
     root.traverse((object) => {
       if (trackedObjects.some((item) => item.uuid === object.uuid)) {
         physicsLeaveUUIDs.push(object.uuid);
+
+        if ((object as PhysicsObject).dispose) {
+          (object as PhysicsObject).dispose();
+        }
       }
     });