fix #IOQOS 修正GetPoint在UCS并且存在基点的情况下拾取点错误的问题。

src/UI/DynamicPrompt/GetPointPromptBlock.ts

@@ -1,4 +1,4 @@
-import { Vector3 } from 'three';
+import { Vector3, Matrix4 } from 'three';
 import { end } from 'xaop';
 import { app } from '../../ApplicationServices/Application';
 import { midPoint, polar } from '../../Geometry/GeUtils';
@@ -159,8 +159,7 @@ export class GetPoint2PromptBlock extends PromptBlock
     }
     get Value(): Vector3
     {
-        let ucs = app.m_Editor.UCSMatrix;
-
+        let ucs = new Matrix4().extractRotation(app.m_Editor.UCSMatrix.clone());
         return this.basePoint
             .clone()
             .add(