优化HelixToolkit的方法，增加水流方向功能，进一步封装Winform控件

lixiaojun

2025-04-22 0329c48a57f33a4c94e44c5e4d3d3c116184986f

 Yw.WpfUI.Hydro.L3d.Core/03-logical/00-core/LogicalSelectionHelper.cs

@@ -130,7 +130,7 @@
        /// <summary>
        /// 选择Visuals
        /// </summary>
        public void SelectVisuals(List<LogicalVisual3D> visuals)
        public void SelectVisual(List<LogicalVisual3D> visuals)
        {
            ClearSelection();
            if (visuals == null || visuals.Count < 1)