fix logic to get active platform settings object to work with build profiles

Author: marcus-winter42

Packages/com.unity.inputsystem/InputSystem/Editor/Settings/EditorPlayerSettingHelpers.cs

@@ -1,7 +1,9 @@
 #if UNITY_EDITOR
 using System;
 using System.Linq;
+using System.Reflection;
 using UnityEditor;
+using UnityEditor.Build.Profile;
 
 namespace UnityEngine.InputSystem.Editor
 {
@@ -154,7 +156,20 @@ private static int TupleToActiveInputHandler((bool newSystemEnabled, bool oldSys
 
         private static SerializedProperty GetPropertyOrNull(string name)
         {
-            var playerSettings = Resources.FindObjectsOfTypeAll<PlayerSettings>().FirstOrDefault();
+            // HOTFIX: the code below works around an issue causing an infinite reimport loop
+            // this will be replaced by a call to an API in the editor instead of using reflection once it is available
+            var buildProfileType = typeof(BuildProfile);
+            var globalPlayerSettingsField = buildProfileType.GetField("s_GlobalPlayerSettings", BindingFlags.Static | BindingFlags.NonPublic);
+            var playerSettings = (PlayerSettings)globalPlayerSettingsField.GetValue(null);
+            var activeBuildProfile = BuildProfile.GetActiveBuildProfile();
+            if (activeBuildProfile != null)
+            {
+                var playerSettingsOverrideField = buildProfileType.GetField("m_PlayerSettings", BindingFlags.Instance | BindingFlags.NonPublic);
+                var playerSettingsOverride = (PlayerSettings)playerSettingsOverrideField.GetValue(activeBuildProfile);
+                if (playerSettingsOverride != null)
+                    playerSettings = playerSettingsOverride;
+            }
+            // HOTFIX ends
             if (playerSettings == null)
                 return null;
             var playerSettingsObject = new SerializedObject(playerSettings);