FIX: Return a valid input action from GetSelectedAction when a binding is selected (ISX-1832). (#1824)

Author: graham-huws

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -34,6 +34,7 @@ however, it has to be formatted properly to pass verification tests.
 - Fixed issue where composite part dropdown manipulates binding path and leaves composite part field unchanged.
 - Fixed lingering highlight effect on Save Asset button after clicking.
 - Fixed missing name in window title for Input Action assets.
+- Fixed "Listen" functionality for selecting an input sometimes expecting the wrong input type.
 
 ## [1.8.0-pre.2] - 2023-11-09
 

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Views/Selectors.cs

@@ -213,6 +213,11 @@ public static IEnumerable<string> GetCompositePartOptions(string bindingName, st
                 ?.wrappedProperty.FindPropertyRelative(nameof(InputActionMap.m_Actions));
             if (actions == null || actions.arraySize - 1 < state.selectedActionIndex || state.selectedActionIndex < 0)
                 return null;
+
+            // If we've currently selected a binding, get the parent input action for it.
+            if (state.selectionType == SelectionType.Binding)
+                return GetRelatedInputAction(state);
+
             return new SerializedInputAction(actions.GetArrayElementAtIndex(state.selectedActionIndex));
         }