Add missing dependencies

Author: stevensJourney

demos/example-capacitor/package.json

@@ -36,6 +36,9 @@
   "devDependencies": {
     "@capacitor/cli": "^7.4.3",
     "@swc/core": "~1.6.0",
+    "@mui/material": "^5.15.12",
+    "@emotion/react": "11.11.4",
+    "@emotion/styled": "11.11.5",
     "@types/node": "^20.12.12",
     "@types/react": "^18.3.2",
     "@types/react-dom": "^18.3.0",