fix: disable PWA for Capacitor builds

Updates PWA configuration to:
- Disable PWA features for Capacitor builds
- Add @capacitor/app dependency
- Update environment variable handling in build config

This prevents conflicts between PWA and native app functionality
when building for mobile platforms.

Technical changes:
- Add isCapacitor check to PWA disable logic
- Update VITE_PWA_ENABLED environment variable definition
- Add @capacitor/app to package dependencies

package.json

@@ -33,6 +33,7 @@
   },
   "dependencies": {
     "@capacitor/android": "^6.2.0",
+    "@capacitor/app": "^6.0.0",
     "@capacitor/cli": "^6.2.0",
     "@capacitor/core": "^6.2.0",
     "@capacitor/ios": "^6.2.0",