Fix server bundle to properly filter Rspack CSS extract loader

The server config was only checking for 'mini-css-extract-plugin' but
Rspack uses 'cssExtractLoader.js'. This caused the CSS extract loader
to remain in the server bundle, which breaks CSS modules exports in SSR.

Added check for 'cssExtractLoader' to properly remove it from server
bundle, ensuring CSS modules work correctly in server-side rendering.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

config/rspack/serverRspackConfig.js

@@ -71,15 +71,15 @@ const configureServer = () => {
   const rules = serverRspackConfig.module.rules;
   rules.forEach((rule) => {
     if (Array.isArray(rule.use)) {
-      // remove the mini-css-extract-plugin and style-loader
+      // remove the mini-css-extract-plugin/CssExtractRspackPlugin and style-loader
       rule.use = rule.use.filter((item) => {
         let testValue;
         if (typeof item === 'string') {
           testValue = item;
         } else if (typeof item.loader === 'string') {
           testValue = item.loader;
         }
-        return !(testValue.match(/mini-css-extract-plugin/) || testValue === 'style-loader');
+        return !(testValue?.match(/mini-css-extract-plugin/) || testValue?.includes('cssExtractLoader') || testValue === 'style-loader');
       });
       const cssLoader = rule.use.find((item) => {
         let testValue;