Fix build after merge

Author: keveleigh

org.mixedrealitytoolkit.uxcomponents.noncanvas/Tests/Runtime/SliderTests.cs

@@ -11,7 +11,7 @@
 using UnityEditor;
 using UnityEngine;
 using UnityEngine.TestTools;
-using UnityEngine.XR.Interaction.Toolkit;
+using UnityEngine.XR.Interaction.Toolkit.Interactables;
 
 using HandshapeId = MixedReality.Toolkit.Input.HandshapeTypes.HandshapeId;