chore: Added translate functions (#21816)

superset-frontend/plugins/plugin-chart-handlebars/src/plugin/index.ts

@@ -35,7 +35,7 @@ export default class HandlebarsChartPlugin extends ChartPlugin {
    */
   constructor() {
     const metadata = new ChartMetadata({
-      description: 'Write a handlebars template to render the data',
+      description: t('Write a handlebars template to render the data'),
       name: t('Handlebars'),
       thumbnail,
     });