Fix spread argument type error

The spread argument in the fetch function was causing a TypeScript error. Changed the fetch implementation to resolve the type issue.

src/lib/supabase.ts

@@ -42,10 +42,10 @@ try {
       flowType: 'implicit',
     },
     global: {
-      fetch: (...args) => {
+      fetch: (url, options) => {
         // CORS 디버깅을 위한 사용자 정의 fetch
-        console.log('Supabase fetch 요청:', args[0]);
+        console.log('Supabase fetch 요청:', url);
-        return fetch(...args).then(response => {
+        return fetch(url, options).then(response => {
           console.log('Supabase 응답 상태:', response.status);
           return response;
         }).catch(err => {