fix: basepath did not read from the environment variable (#24870)

web/utils/var-basePath.js

@@ -1,6 +0,0 @@
-// export basePath to next.config.js
-// same as the one exported from var.ts
-module.exports = {
-  basePath: process.env.NEXT_PUBLIC_BASE_PATH || '',
-  assetPrefix: '',
-}

web/utils/var.ts

@@ -118,7 +118,7 @@ export const getVars = (value: string) => {
 
 // Set the value of basePath
 // example: /dify
-export const basePath = ''
+export const basePath = process.env.NEXT_PUBLIC_BASE_PATH || ''
 
 export function getMarketplaceUrl(path: string, params?: Record<string, string | undefined>) {
   const searchParams = new URLSearchParams({ source: encodeURIComponent(window.location.origin) })