[fix]字符串替换bug，replace会从前往后替换所有target，"0,104".replace("0","0,1")的结果是"0,1,10,14"。

此处代码的本意是替换第一个符合的target字符串，应使用replaceFirst

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysDeptServiceImpl.java

@@ -259,7 +259,7 @@ public class SysDeptServiceImpl implements ISysDeptService
         List<SysDept> children = deptMapper.selectChildrenDeptById(deptId);
         for (SysDept child : children)
         {
-            child.setAncestors(child.getAncestors().replace(oldAncestors, newAncestors));
+            child.setAncestors(child.getAncestors().replaceFirst(oldAncestors, newAncestors));
         }
         if (children.size() > 0)
         {