fix: dev.setupMiddlewares not work (#6166)

Author: caohuilin

.changeset/thirty-balloons-punch.md

@@ -0,0 +1,7 @@
+---
+'@modern-js/uni-builder': patch
+---
+
+fix: dev.setupMiddlewares not work
+
+fix: 修复 dev.setupMiddlewares 不生效的问题

packages/cli/uni-builder/src/shared/devServer.ts

@@ -41,6 +41,7 @@ export const transformToRsbuildServerOptions = (
     https,
     startUrl,
     beforeStartUrl,
+    setupMiddlewares,
     ...devConfig
   } = dev;
 
@@ -57,6 +58,7 @@ export const transformToRsbuildServerOptions = (
         port: '<port>',
         ...(devConfig.client || {}),
       },
+      setupMiddlewares,
     },
     devServer,
     {},