FIX: UnityEditor using not in #if block.

Author: Rene Damm

Packages/com.unity.inputsystem/InputSystem/Actions/Composites/Vector2Composite.cs

@@ -1,11 +1,11 @@
 using System;
-using UnityEditor;
 using UnityEngine.InputSystem.Controls;
 using UnityEngine.InputSystem.Layouts;
 using UnityEngine.InputSystem.Utilities;
 using UnityEngine.Scripting;
 
 #if UNITY_EDITOR
+using UnityEditor;
 using UnityEngine.InputSystem.Editor;
 #endif