FIX: ISXB-1208 fix InvalidOperationException when entering playmode (#2110)

Author: smnwttbr

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -9,6 +9,8 @@ Due to package verification, the latest version below is the unpublished version
 however, it has to be formatted properly to pass verification tests.
 
 ## [Unreleased] - yyyy-mm-dd
+### Fixed
+- Fixed an issue causing InvalidOperationException when entering playmode with domain reload disabled. [ISXB-1208](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1208).
 
 ### Fixed
 - Fixed an issue where the prompt to enable the InputSystem backends would interrupt the import of large assets.

Packages/com.unity.inputsystem/InputSystem/Plugins/UI/InputSystemUIInputModule.cs

@@ -1653,9 +1653,9 @@ protected override void OnDisable()
             ResetPointers();
 
             InputActionState.s_GlobalState.onActionControlsChanged.RemoveCallback(m_OnControlsChangedDelegate);
-
             DisableAllActions();
             UnhookActions();
+            UnassignActions();
 
             base.OnDisable();
         }