fix: mcp-server test case

Author: SyMind

test/development/mcp-server/fixtures/default-template/next.config.js

@@ -1 +1,11 @@
-module.exports = {}
+module.exports = {
+    webpack(config) {
+    if (process.env.NEXT_RSPACK) {
+      // Disable persistent cache when using Rspack.
+      // Rspack's persistent cache may reuse the previously compiled pages.
+      // This differs from webpack in dev mode, which typically builds only the page being requested.
+      config.cache = false
+    }
+    return config
+  }
+}