fix: Fixed switching workspaces with containerized essentials, b=(no-bug), c=tabs, workspaces

src/zen/tabs/zen-tabs/vertical-tabs.css

@@ -1275,6 +1275,5 @@
   &[hidden='true'] {
     visibility: hidden;
     pointer-events: none;
-    position: fixed;
   }
 }

src/zen/workspaces/ZenWorkspaces.mjs

@@ -2052,7 +2052,10 @@ var ZenWorkspaces = new (class extends ZenMultiWindowFeature {
           (w) => w.uuid === essentialsWorkspacess[essentialsWorkspacess.length - 1].uuid
         );
         // Check if the container is even going to appear on the screen, to save on animation
-        if (firstWorkspaceIndex > newWorkspaceIndex || lastWorkspaceIndex < newWorkspaceIndex) {
+        if (
+          (isGoingLeft && newWorkspaceIndex > lastWorkspaceIndex) ||
+          (!isGoingLeft && newWorkspaceIndex < firstWorkspaceIndex)
+        ) {
           container.remove();
           continue;
         }