FIX: Update icon scaling in Input Actions window (#2054)

* Round pixelsPerPoint up rather than down when calculating icon scale

* Update CHANGELOG.md

Author: tspiller

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -23,6 +23,7 @@ however, it has to be formatted properly to pass verification tests.
 - Fixed pasting into an empty map list raising an exception. [ISXB-1150](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1150)
 - Fixed pasting bindings into empty Input Action asset. [ISXB-1180](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1180)
 - Fixed missing '&' symbol in Control Scheme dropdown on Windows platform. [ISXB-1109](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1109)
+- Fixed icon scaling in Input Actions window.
 
 ### Changed
 - Added back the InputManager to InputSystem project-wide asset migration code with performance improvement (ISX-2086).

Packages/com.unity.inputsystem/InputSystem/Editor/Internal/GUIHelpers.cs

@@ -43,7 +43,7 @@ public static void DrawLineSeparator(string label = null)
         public static Texture2D LoadIcon(string name)
         {
             var skinPrefix = EditorGUIUtility.isProSkin ? "d_" : "";
-            var scale = Mathf.Clamp((int)EditorGUIUtility.pixelsPerPoint, 0, 4);
+            var scale = Mathf.Clamp(Mathf.CeilToInt(EditorGUIUtility.pixelsPerPoint), 0, 4);
             var scalePostFix = scale > 1 ? $"@{scale}x" : "";
             if (name.IndexOfAny(Path.GetInvalidFileNameChars()) > -1)
                 name = string.Join("_", name.Split(Path.GetInvalidFileNameChars()));