Handy Selectable script to unhighlight a selectable component in Unity (e.g. a Button) when the user moves away from it, EVEN IF the user has holding a button on it

ResetSelectableHighlight.cs

/*
Handy Selectable script to unhighlight a selectable component in Unity (e.g. a Button) when the user moves away from it, EVEN IF the user has holding a button on it.

Resolves the situation where Unity UI Components remain in a highlighted state even after the pointer has moved away (e.g. user holding a button, mouse, pointer down).
Now whenever the cursor leaves the component, it will force the UI compinent to revert to unhighlighted
*/

using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

[RequireComponent(typeof(Selectable))]
public class ResetSelectableHighlight : MonoBehaviour, IPointerExitHandler
{
    [SerializeField]
    private Selectable attachedSelectable;

    // Start is called before the first frame update
    void Awake()
    {
        if (!attachedSelectable)
        {
            attachedSelectable = GetComponent<Selectable>();
        }
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        attachedSelectable.targetGraphic.CrossFadeColor(attachedSelectable.colors.normalColor, 0f, true, true);
    }
}