Re-export default MUI provider as default

Author: garronej

src/mui/index.ts

@@ -1,3 +1,5 @@
+"use client";
+
 export * from "./mui";
 import { MuiDsfrThemeProvider } from "./mui";
 export { useIsGov } from "./useIsGov";

src/mui/mui.tsx

@@ -393,6 +393,8 @@ export function createMuiDsfrThemeProvider(params: {
 
 export const { MuiDsfrThemeProvider } = createMuiDsfrThemeProvider({});
 
+export default MuiDsfrThemeProvider;
+
 export function createDsfrCustomBrandingProvider(params: {
     createMuiTheme: (params: {
         isDark: boolean;