Fixed essentials and pinned tabs not being correctly restored and race conditions when starting multiple zen windows

src/browser/base/zen-components/ZenWorkspacesStorage.mjs

@@ -70,6 +70,8 @@ var ZenWorkspacesStorage = {
         this.lazy.Weave.Service.engineManager.register(ZenWorkspacesEngine);
         await ZenWorkspacesStorage.migrateWorkspacesFromJSON();
       }
+
+      ZenWorkspaces._resolveDBInitialized();
     });
   },