When the Supported Devices list is added under Input System Package Settings in the Project Settings window and Undo operation is performed then it causes the editor to throw ArgumentOutOfRangeException continuously, Also the added input devices are not removed from the list, Refer attached video.

Steps to reproduce:
1. Create a new project
2. Window > Package Manager > Input System > Install
3. Edit > Project Settings > Input System Package > Create settings asset
4. Supported Device > Add (Joystick, Mouse, Keyboard, etc.)
5. Edit > Undo Inspector

Actual Result:
ArgumentOutOfRangeException is thrown continuously on performing Undo operation with Supported Device List under Input System Project Settings

Expected Result:
Undo operation is performed gracefully

Reproducible in:
2021.1.0a5, 2020.2.0b11, 2020.1.12f1, 2019.4.14f1, 2018.4.29f1 with package version 1.0.0, 0.2.1-preview

Environment:
Windows10 and macOS 10.15

Stack trace:
ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: index
UnityEngine.InputSystem.Utilities.ReadOnlyArray`1[TValue].get_Item (System.Int32 index) (at Library/PackageCache/com.unity.inputsystem@1.0.0/InputSystem/Utilities/ReadOnlyArray.cs:117)
UnityEngine.InputSystem.Editor.InputSettingsProvider+<>c__DisplayClass12_0.<InitializeWithCurrentSettings>b__3 (UnityEngine.Rect rect, System.Int32 index, System.Boolean isActive, System.Boolean isFocused) (at Library/PackageCache/com.unity.inputsystem@1.0.0/InputSystem/Editor/Settings/InputSettingsProvider.cs:284)
UnityEditorInternal.ReorderableList.DoListElements (UnityEngine.Rect listRect, UnityEngine.Rect visibleRect) (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEditorInternal.ReorderableList.DoLayoutList () (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEngine.InputSystem.Editor.InputSettingsProvider.OnGUI (System.String searchContext) (at Library/PackageCache/com.unity.inputsystem@1.0.0/InputSystem/Editor/Settings/InputSettingsProvider.cs:126)
UnityEditor.SettingsWindow.DrawControls () (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEditor.SettingsWindow.DrawSettingsPanel () (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)

ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: index
UnityEngine.InputSystem.Utilities.ReadOnlyArray`1[TValue].get_Item (System.Int32 index) (at Library/PackageCache/com.unity.inputsystem@1.0.0/InputSystem/Utilities/ReadOnlyArray.cs:117)
UnityEngine.InputSystem.Editor.InputSettingsProvider+<>c__DisplayClass12_0.<InitializeWithCurrentSettings>b__3 (UnityEngine.Rect rect, System.Int32 index, System.Boolean isActive, System.Boolean isFocused) (at Library/PackageCache/com.unity.inputsystem@1.0.0/InputSystem/Editor/Settings/InputSettingsProvider.cs:284)
UnityEditorInternal.ReorderableList.DoListElements (UnityEngine.Rect listRect, UnityEngine.Rect visibleRect) (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEditorInternal.ReorderableList.DoLayoutList () (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEngine.InputSystem.Editor.InputSettingsProvider.OnGUI (System.String searchContext) (at Library/PackageCache/com.unity.inputsystem@1.0.0/InputSystem/Editor/Settings/InputSettingsProvider.cs:126)
UnityEditor.SettingsWindow.DrawControls () (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEditor.SettingsWindow.DrawSettingsPanel () (at <20090764902e4293871cd9b1a16b42f1>:0)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.IMGUIContainer.DoIMGUIRepaint () (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.UIR.RenderChainCommand.ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams drawParams, System.Single pixelsPerPoint, System.Exception& immediateException) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
Rethrow as ImmediateModeException
UnityEngine.UIElements.UIR.RenderChain.Render () (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.UIRRepaintUpdater.Update () (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.VisualTreeUpdater.UpdateVisualTreePhase (UnityEngine.UIElements.VisualTreeUpdatePhase phase) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.Panel.UpdateForRepaint () (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.Panel.Repaint (UnityEngine.Event e) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at <ea9e8ac7e3ff427f8b124b300d3b8a68>:0)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at <f2a59ed0ea0d4e54baa7d077aaf5393a>:0)