fix: Fix wrong spacing on the app menu item

Signed-off-by: mr. m <[email protected]>

Author: mr-cheffy

src/zen/common/styles/zen-popup.css

@@ -9,6 +9,9 @@
 
 :root {
   --panel-subview-body-padding: 2px 0;
+  --arrowpanel-menuitem-border-radius: 5px;
+  --arrowpanel-menuitem-margin: var(--uc-arrowpanel-menuitem-margin-block)
+    var(--uc-arrowpanel-menuitem-margin-inline);
   --arrowpanel-menuitem-padding-block: 8px;
   --arrowpanel-menuitem-padding-inline: 14px;
   --uc-arrowpanel-menuicon-margin-inline: 14px;