fix: move Leaflet CSS import

apps/web/app/layout.tsx

@@ -1,5 +1,6 @@
 import type { ReactNode } from "react";
 import { getAppName } from "@tline/config";
+import "leaflet/dist/leaflet.css";
 
 export const metadata = {
   title: getAppName()

apps/web/app/map/page.tsx

@@ -1,6 +1,5 @@
 "use client";
 
-import "leaflet/dist/leaflet.css";
 import L from "leaflet";
 import { useEffect, useRef, useState } from "react";
 import { MapContainer, TileLayer, Marker, Popup, useMap } from "react-leaflet";