修正被删除的对象还能被捕捉的问题

src/Editor/SnapServices.ts

@@ -151,8 +151,10 @@ export class SnapServices
         let vcsP = app.m_Editor.m_MouseCtrl.m_CurMousePointVCS;
         for (let obj of app.m_Viewer.Scene.children)
         {
-            if (!this.notSnapEntity.has(obj.userData) && obj.userData && obj.userData instanceof Entity)
+            if (obj.userData && obj.userData instanceof Entity)
             {
+                if (this.notSnapEntity.has(obj.userData)) continue;
+                if (obj.userData.IsErase) continue;
                 for (let p of obj.userData.GetSnapPoints())
                 {
                     let pv = p.clone();