Reduce menu width from 320 to 300 points

Author: erusev

LlamaBarn/Menu/Layout.swift

@@ -3,7 +3,7 @@ import AppKit
 /// Shared UI layout constants and helpers for NSMenu custom rows.
 enum Layout {
   /// Standard menu width for all items.
-  static let menuWidth: CGFloat = 320
+  static let menuWidth: CGFloat = 300
   /// Distance from menu edge to background view (used in all menu items and headers).
   static let outerHorizontalPadding: CGFloat = 5
   /// Distance from background edge to content (used in all menu items and headers).