Replace storybook-addon-material-ui5

The addon does not support Storybook 7 as it is still using default
export of @storybook/addons

The addon has not been developed since April 2023.

I don't see any of its functionality, other than applying the theme,
actually working with Storybook 6 either. The project it was forked
from has some open issues where others had similar problems.

react-theming/storybook-addon-material-ui#124
react-theming/storybook-addon-material-ui#97

I followed the guide from Ocotober 2022 for Material UI in Storybook to
activate our theme without storybook-addon-material-ui.

https://storybook.js.org/blog/material-ui-in-storybook/

.storybook/main.js

@@ -6,7 +6,6 @@ module.exports = {
     '@storybook/addon-links',
     '@storybook/addon-essentials',
     '@storybook/addon-interactions',
-    'storybook-addon-material-ui5',
     'storybook-addon-mock/register',
   ],
   framework: '@storybook/nextjs',

.storybook/preview.js

@@ -3,9 +3,9 @@ import dayjs from 'dayjs';
 import { IntlProvider } from 'react-intl';
 import isoWeek from 'dayjs/plugin/isoWeek';
 import { LocalizationProvider } from '@mui/x-date-pickers/LocalizationProvider';
-import { muiTheme } from 'storybook-addon-material-ui5';
 import withMock from 'storybook-addon-mock';
 import { Provider as ReduxProvider } from 'react-redux';
+import { ThemeProvider } from '@mui/material';
 
 import theme from '../src/theme';
 import '../src/styles.css';
@@ -25,7 +25,11 @@ const I18nProvider = (props) => {
 };
 
 export const decorators = [
-  muiTheme([theme]),
+  (Story) => (
+    <ThemeProvider theme={theme}>
+      <Story />
+    </ThemeProvider>
+  ),
   (story) => <ReduxProvider store={createStore()}>{story()}</ReduxProvider>,
   (story) => <I18nProvider>{story()}</I18nProvider>,
   withMock,

package.json

@@ -148,7 +148,6 @@
     "npm-run-all2": "^6.0.4",
     "prettier": "^2.5.1",
     "storybook": "7.0",
-    "storybook-addon-material-ui5": "^1.0.0",
     "storybook-addon-mock": "^2.4.0",
     "ts-jest": "^27.0.5",
     "ts-loader": "^9.2.6",