[C#] Fix `Transform3D.InterpolateWith` applying rotation before scale

(cherry picked from commit e2ed63b313e3eff714e32f2cd2d01db9f0e2ea9d)

modules/mono/glue/GodotSharp/GodotSharp/Core/Basis.cs

@@ -238,7 +238,7 @@ namespace Godot
 
         private void Rotate(Quat quaternion)
         {
-            this *= new Basis(quaternion);
+            this = new Basis(quaternion) * this;
         }
 
         private void SetDiagonal(Vector3 diagonal)