Refactor ChangeHandle modal (#1929)

* Refactor ChangeHandle to use new methods

* Better telemetry

* Remove unused logic

* Remove caching

* Add error message

* Persist service changes, don't fall back on change handle

src/state/queries/service.ts

@@ -0,0 +1,16 @@
+import {useQuery} from '@tanstack/react-query'
+
+import {useSession} from '#/state/session'
+
+export const RQKEY = (serviceUrl: string) => ['service', serviceUrl]
+
+export function useServiceQuery() {
+  const {agent} = useSession()
+  return useQuery({
+    queryKey: RQKEY(agent.service.toString()),
+    queryFn: async () => {
+      const res = await agent.com.atproto.server.describeServer()
+      return res.data
+    },
+  })
+}