fix sidebar drag style

apps/app/src/client/components/Sidebar/ResizableArea/ResizableArea.module.scss

@@ -18,7 +18,11 @@
     left: -4px;
     width: 24px;
     height: 100%;
+    padding: 0;
+    appearance: none;
     cursor: ew-resize;
+    background: transparent;
+    border: 0;
   }
   .grw-navigation-draggable-line {
     position: absolute;