fix: contextmenu location not right when body with scroll (#3516)

Co-authored-by: quanbisen <bisen_quan@lebo.cn>

src/components/ContextMenu/src/createContextMenu.ts

@@ -34,7 +34,7 @@ export const createContextMenu = function (options: CreateContextOptions) {
 
     if (options.event) {
       propsData.customEvent = event;
-      propsData.axis = { x: event.clientX, y: event.clientY };
+      propsData.axis = { x: event.clientX, y: event.clientY + body.scrollTop }; // y坐标需加上body往上滚动的Y
     }
 
     const vm = createVNode(contextMenuVue, propsData);