[Update] Change the notification UI.

(Change the base notification library from MUI to React-Toastify.)

package-lock.json

@@ -28,6 +28,7 @@
         "react-error-boundary": "5.0.0",
         "react-i18next": "15.5.1",
         "react-resizable-layout": "0.7.2",
+        "react-toastify": "11.0.5",
         "sass": "1.79.4",
         "semver": "7.7.1"
       },
@@ -5534,6 +5535,19 @@
         "react-dom": ">=17.0.0"
       }
     },
+    "node_modules/react-toastify": {
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/react-toastify/-/react-toastify-11.0.5.tgz",
+      "integrity": "sha512-EpqHBGvnSTtHYhCPLxML05NLY2ZX0JURbAdNYa6BUkk+amz4wbKBQvoKQAB0ardvSarUBuY4Q4s1sluAzZwkmA==",
+      "license": "MIT",
+      "dependencies": {
+        "clsx": "^2.1.1"
+      },
+      "peerDependencies": {
+        "react": "^18 || ^19",
+        "react-dom": "^18 || ^19"
+      }
+    },
     "node_modules/react-transition-group": {
       "version": "4.4.5",
       "resolved": "https://registry.npmjs.org/react-transition-group/-/react-transition-group-4.4.5.tgz",