Change tables to make them work for our scenario (#12193)

* Change tables to make them work for our scenario

* Comments & deprecate API

* Disable selections by default

src/sql/workbench/browser/modelComponents/componentBase.ts

@@ -372,6 +372,17 @@ export abstract class ContainerBase<T, TPropertyBag extends azdata.ComponentProp
 		return;
 	}
 
+	public mergeCss(...styles: azdata.CssStyles[]): azdata.CssStyles {
+		const x = styles.reduce((previous, current) => {
+			if (current) {
+				return Object.assign(previous, current);
+			}
+			return previous;
+		}, {});
+
+		return x;
+	}
+
 	protected onItemsUpdated(): void {
 	}