fix: Handle optional parameters on move_local_x in lesson 11 (#480)

Fix #479

Author: danielbernard

course/lesson-11-time-delta/rotating-and-moving-delta/TestsRotatingMovingDelta.gd

@@ -46,7 +46,7 @@ func test_movement_speed_is_correct() -> String:
 	var has_correct_speed := false
 	for line in _lines:
 		has_correct_rotation = has_correct_rotation or line in ["rotate(delta*2)", "rotate(2*delta)"]
-		has_correct_speed = has_correct_speed or line in ["move_local_x(100*delta)", "move_local_x(delta*100)"]
+		has_correct_speed = has_correct_speed or line in ["move_local_x(100*delta)", "move_local_x(delta*100)", "move_local_x(100*delta,false)", "move_local_x(delta*100,false)"]
 
 	if not has_correct_rotation:
 		return tr("Is the rotation speed correct?")