fix: msw 활성화 환경 변수 추가 및 스크립트 추가

Author: Seojunhwan

package.json

@@ -4,6 +4,7 @@
   "private": true,
   "scripts": {
     "dev": "next dev",
+    "dev:msw": "MOCKING_ENABLED=true next dev",
     "build": "next build",
     "start": "next start",
     "lint": "next lint",

src/app/layout.tsx

@@ -13,7 +13,10 @@ export const metadata: Metadata = {
   description: "Generated by create next app",
 };
 
-if (process.env.NEXT_RUNTIME === "nodejs") {
+if (
+  process.env.NEXT_RUNTIME === "nodejs" &&
+  process.env.MOCKING_ENABLED === "true"
+) {
   const { server } = await import("@/mocks/server");
   console.info("🔥 [MSW] Server-side mocking enabled");
   server.listen();

src/providers/MSWProvider.tsx

@@ -5,7 +5,7 @@ import { Suspense, use } from "react";
 import { handlers } from "@/mocks/handlers";
 
 const mockingEnabledPromise =
-  typeof window !== "undefined"
+  typeof window !== "undefined" && process.env.MOCKING_ENABLED === "true"
     ? import("@/mocks/browser").then(async ({ worker }) => {
         await worker.start({
           onUnhandledRequest(request, print) {