Add focus logic to the tabbed panel (#5649)

* add focus logic to the tabbed panel

* change enter to be on key up

* fix  tests

src/sql/workbench/parts/query/modelViewTab/queryModelViewTab.ts

@@ -49,6 +49,10 @@ export class QueryModelViewTabView implements IPanelView {
 	public layout(dimension: Dimension): void {
 	}
 
+	public focus(): void {
+
+	}
+
 	/**
 	 * Load the angular components and record for this input that we have done so
 	 */