修正延伸没有记录实体记录导致的撤销错误.

src/DatabaseServices/Polyline.ts

@@ -526,6 +526,8 @@ export class Polyline extends Curve
     {
         if (this.CloseMark || this.ParamOnCurve(newParam)) return;
 
+        this.WriteAllObjectRecord();
+
         let ptIndex: number;
         let bulIndex: number;