add options to customize the model view dashboard (#9872)

* add options to customize the mv dashboard

* rename the property

src/sql/workbench/contrib/dashboard/browser/core/dashboardPage.component.ts

@@ -157,7 +157,7 @@ export abstract class DashboardPage extends AngularDisposable implements IConfig
 			});
 			this.propertiesWidget = properties ? properties[0] : undefined;
 			this._panel.options = {
-				showTabsWhenOne: true,
+				alwaysShowTabs: true,
 				layout: NavigationBarLayout.vertical,
 				showIcon: true
 			};