opti: 1.adjust padding of page-tree item; 2. fetch new icon from figma;

libs/components/layout/src/workspace-sidebar/page-tree/tree-item/tree-item.module.scss

@@ -87,7 +87,7 @@
     overflow: hidden;
 
     .TreeItemMoreActions {
-        visibility: visible;
+        visibility: hidden;
         cursor: pointer;
     }
     &:hover {