refactor: Creates the VizType enum (#31193)

superset-frontend/plugins/plugin-chart-table/test/testData.ts

@@ -24,12 +24,13 @@ import {
   QueryMode,
   supersetTheme,
   ComparisonType,
+  VizType,
 } from '@superset-ui/core';
 import { TableChartProps, TableChartFormData } from '../src/types';
 
 const basicFormData: TableChartFormData = {
   datasource: '1__abc',
-  viz_type: 'table',
+  viz_type: VizType.Table,
   align_pn: false,
   color_pn: false,
   show_cell_bars: true,