add i18nProvider for DeleteButton stories

Author: adguernier

packages/ra-ui-materialui/src/button/DeleteButton.stories.tsx

@@ -2,6 +2,22 @@ import * as React from 'react';
 import { createTheme } from '@mui/material';
 import { DeleteButton } from './DeleteButton';
 import { AdminContext } from '../AdminContext';
+import frenchMessages from 'ra-language-french';
+import polyglotI18nProvider from 'ra-i18n-polyglot';
+import englishMessages from 'ra-language-english';
+
+const theme = createTheme({
+    palette: {
+        error: {
+            main: '#07BA8F',
+        },
+    },
+});
+
+const i18nProvider = polyglotI18nProvider(
+    locale => (locale === 'fr' ? frenchMessages : englishMessages),
+    'en'
+);
 
 export default { title: 'ra-ui-materialui/button/DeleteButton' };
 
@@ -12,7 +28,7 @@ export const Basic = () => (
 );
 
 export const Pessimistic = () => (
-    <AdminContext>
+    <AdminContext i18nProvider={i18nProvider}>
         <DeleteButton
             mutationMode="pessimistic"
             record={{ id: 1 }}
@@ -27,11 +43,3 @@ export const WithUserDefinedPalette = () => (
         <DeleteButton label="Delete" record={{ id: 1 }} />
     </AdminContext>
 );
-
-const theme = createTheme({
-    palette: {
-        error: {
-            main: '#07BA8F',
-        },
-    },
-});