Refactor AddEventModal state and improve useRouteQuery hook

Initialize AddEventModal state from editEvent props directly, removing
the useEffect that synchronized state. Add AbortController to
useRouteQuery to cancel in-flight requests when dependencies change or
component unmounts.

Add @testing-library/user-event and fix related tests to handle async
user events. Polyfill localStorage in Vitest setup for jsdom environment.

package-lock.json

@@ -37,7 +37,7 @@
         "@react-navigation/native-stack": "^7.14.14",
         "@timetoleave/api-client": "*",
         "@timetoleave/core": "*",
-        "expo": "~54.0.33",
+        "expo": "~54.0.34",
         "expo-calendar": "~15.0.8",
         "expo-dev-client": "~6.0.21",
         "expo-location": "~19.0.8",
@@ -81,6 +81,7 @@
         "@testing-library/dom": "^10.4.1",
         "@testing-library/jest-dom": "^6.9.1",
         "@testing-library/react": "^16.3.2",
+        "@testing-library/user-event": "^14.6.1",
         "@types/node": "^20",
         "@types/react": "~19.1.10",
         "@types/react-dom": "~19.1.10",
@@ -5271,6 +5272,20 @@
         "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
       }
     },
+    "node_modules/@testing-library/user-event": {
+      "version": "14.6.1",
+      "resolved": "https://registry.npmjs.org/@testing-library/user-event/-/user-event-14.6.1.tgz",
+      "integrity": "sha512-vq7fv0rnt+QTXgPxr5Hjc210p6YKq2kmdziLgnsZGgLJ9e6VAShx1pACLuRjd/AS/sr7phAR58OIIpf0LlmQNw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12",
+        "npm": ">=6"
+      },
+      "peerDependencies": {
+        "@testing-library/dom": ">=7.21.4"
+      }
+    },
     "node_modules/@timetoleave/api-client": {
       "resolved": "packages/api-client",
       "link": true