[完善]完善tree的滚动

src/app/ui/plan/collection-tools.component.scss

@@ -130,7 +130,7 @@
 }
 .functionalDomain {
   flex: 98%;
-  // overflow: hidden;
+  overflow: hidden;
   .functionalDomainContent {
     // position: relative;
     width: 100%;