traffic-light bgc fix

Signed-off-by: Roman <ixrock@gmail.com>

src/renderer/components/cluster-manager/cluster-manager.scss

@@ -11,7 +11,6 @@
   }
 
   .ClustersMenu {
-    margin-top: 25px;
     grid-area: menu;
   }
 

src/renderer/components/cluster-manager/clusters-menu.scss

@@ -5,7 +5,8 @@
   --flex-gap: #{$padding * 2};
   --menu-bgc: #252729;
 
-  padding: $padding * 2;
+  padding: var(--flex-gap);
+  padding-top: calc(var(--flex-gap) + 20px); // add extra-space for "traffic-light" buttons (mac)
   background: var(--menu-bgc);
 
   #add-cluster {