Remove unused vue-sweetalert2 plugin

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RaRBJFZKSTA7naHGuQHfnQ

package.json

@@ -39,11 +39,11 @@
     "pinia-plugin-persistedstate": "^4.7.1",
     "primeicons": "^7.0.0",
     "primevue": "^4.5.4",
+    "sweetalert2": "^11.4.4",
     "tippy.js": "^6.3.7",
     "vue": "^3.5.29",
     "vue-chartjs": "^5.3.3",
     "vue-router": "^5.0.3",
-    "vue-sweetalert2": "^5.0.11",
     "vue-toast-notification": "^3.1.3",
     "vuedraggable": "^4.1.0"
   },