feat: Added support for opening external links with 'continue where left off' preference enabled, b=(no-bug), c=split-view, tabs, workspaces

src/zen/split-view/ZenViewSplitter.mjs

@@ -1506,6 +1506,8 @@ class ZenViewSplitter extends ZenDOMOperatedFeature {
         if (groupIndex >= 0) {
           this.removeTabFromGroup(tab, groupIndex, true);
         }
+        gBrowser.selectedTab = tab;
+        tab._selected = true;
       }
     }
   };