revert useless NODE_ENV check

Author: BYK

next.config.ts

@@ -24,7 +24,6 @@ const outputFileTracingExcludes = process.env.NEXT_PUBLIC_DEVELOPER_DOCS
     };
 
 if (
-  !process.env.NODE_ENV &&
   process.env.NODE_ENV !== 'development' &&
   (!process.env.NEXT_PUBLIC_SENTRY_DSN || !process.env.SENTRY_DSN)
 ) {

package.json

@@ -21,6 +21,7 @@
     "build": "yarn enforce-redirects && next build && yarn generate-md-exports",
     "generate-md-exports": "node scripts/generate-md-exports.mjs",
     "vercel:build:developer-docs": "yarn enforce-redirects && git submodule init && git submodule update && NEXT_PUBLIC_DEVELOPER_DOCS=1 yarn build",
+    "start:dev": "NODE_ENV=development yarn build && yarn start",
     "start": "next start",
     "lint": "next lint",
     "lint:ts": "tsc --skipLibCheck",