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

extensions/notebook/src/test/managePackages/managePackagesDialog.test.ts

@@ -180,6 +180,7 @@ describe('Manage Package Dialog', () => {
 		});
 		let declarativeTable: () => azdata.DeclarativeTableComponent = () => Object.assign({}, componentBase, {
 			onDataChanged: undefined!,
+			onRowSelected: undefined!,
 			data: [],
 			columns: []
 		});