Add exports to mui-material-nextjs package

Author: DiegoAndai

packages/mui-material-nextjs/package.json

@@ -25,9 +25,9 @@
   },
   "scripts": {
     "build": "pnpm build:modern && pnpm build:node && pnpm build:stable && pnpm build:types && pnpm build:copy-files",
-    "build:modern": "node ../../scripts/build.mjs modern",
-    "build:node": "node ../../scripts/build.mjs node",
-    "build:stable": "node ../../scripts/build.mjs stable",
+    "build:modern": "node ../../scripts/build.mjs modern --exportFormat exports",
+    "build:node": "node ../../scripts/build.mjs node --exportFormat exports",
+    "build:stable": "node ../../scripts/build.mjs stable --exportFormat exports",
     "build:copy-files": "node ../../scripts/copyFiles.mjs",
     "build:types": "node ../../scripts/buildTypes.mjs",
     "prebuild": "rimraf build tsconfig.build.tsbuildinfo",