Added 'Reopen Closed Tab' command

Author: papa-Leo

src/zen/urlbar/ZenUBGlobalActions.sys.mjs

@@ -95,6 +95,11 @@ const globalActionsTemplate = [
       return isNotEmptyTab(window);
     },
   },
+  {
+    label: 'Reopen Closed Tab',
+    command: 'History:UndoCloseTab',
+    icon: 'chrome://browser/skin/zen-icons/open.svg',
+  },
   {
     label: 'Reload Tab',
     command: 'Browser:Reload',