树添加样式处理

SafeCampus.WEB/src/components/TreeFilter/index.scss

@@ -26,7 +26,8 @@
       .el-tree-node.is-current > .el-tree-node__content {
         background-color: var(--el-color-primary);
         .el-tree-node__label,
-        .el-tree-node__expand-icon {
+        .el-tree-node__expand-icon,
+        .el-dropdown .el-link {
           color: white;
         }
         .is-leaf {