Add motion parameter to toggle whether recovery is reported as a collision

This makes the intent explicit in each use case.

servers/physics_server_2d.h

@@ -485,6 +485,7 @@ public:
 		bool collide_separation_ray = false;
 		RBSet<RID> exclude_bodies;
 		RBSet<ObjectID> exclude_objects;
+		bool recovery_as_collision = false;
 
 		MotionParameters() {}
 
@@ -727,6 +728,9 @@ public:
 
 	Array get_exclude_objects() const;
 	void set_exclude_objects(const Array &p_exclude);
+
+	bool is_recovery_as_collision_enabled() const { return parameters.recovery_as_collision; }
+	void set_recovery_as_collision_enabled(bool p_enabled) { parameters.recovery_as_collision = p_enabled; }
 };
 
 class PhysicsTestMotionResult2D : public RefCounted {