vertical context navigation: fix small misalignment issue

chrome/vertical_context_navigation.css

@@ -26,10 +26,14 @@ scrollbox[orient="vertical"]::before{
   flex-direction: column !important;
   grid-area: 1 / 1 / auto / 1;
   min-width: unset !important;
-  
+  margin-top: -3px;
+  align-items: flex-start;
 }
-#context-navigation > menuitem{ min-height: 38px; width: unset !important; }
-#context-navigation > menuitem > .menu-iconic-left{ margin: 0 !important; padding: 0 !important; }
+#context-navigation > .menuitem-iconic{ min-height: 38px; width: unset !important; }
+#context-navigation > .menuitem-iconic[_moz-menuactive="true"] > .menu-iconic-left > .menu-iconic-icon{
+  border-radius: calc(var(--panel-border-radius) / 2) !important;
+}
+#context-navigation > .menuitem-iconic > .menu-iconic-left{ margin: 0 !important; padding: 0 !important; }
 #context-sep-navigation{ display: none }
 #context-navigation ~ * { grid-area: auto / 2 / auto / 2; }
 #context-navigation[hidden] ~ *{ margin-inline-start: -38px; }