feat: improve test & bundler (#14434)

#### PR Dependency Tree


* **PR #14434** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Introduced rspack bundler as an alternative to webpack for optimized
builds.

* **Tests & Quality**
* Added comprehensive editor semantic tests covering markdown, hotkeys,
and slash-menu operations.
* Expanded CI cross-browser testing to Chromium, Firefox, and WebKit;
improved shape-rendering tests to account for zoom.

* **Bug Fixes**
  * Corrected CSS overlay styling for development servers.
  * Fixed TypeScript typings for build tooling.

* **Other**
  * Document duplication now produces consistent "(n)" suffixes.
  * French i18n completeness increased to 100%.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tools/cli/src/webpack/cache-group.ts

@@ -21,11 +21,18 @@ export const productionCacheGroups = {
   asyncVendor: {
     test: /[\\/]node_modules[\\/]/,
     name(module: any) {
+      const modulePath =
+        module?.nameForCondition?.() || module?.context || module?.resource;
+
+      if (!modulePath || typeof modulePath !== 'string') {
+        return 'app-async';
+      }
+
       // monorepo linked in node_modules, so it's not a npm package
-      if (!module.context.includes('node_modules')) {
+      if (!modulePath.includes('node_modules')) {
         return `app-async`;
       }
-      const name = module.context.match(
+      const name = modulePath.match(
         /[\\/]node_modules[\\/](.*?)([\\/]|$)/
       )?.[1];
       return `npm-async-${name}`;