[WTF-2452] Fix transformation for require of external library with as output format (#157)

## Checklist

-   Contains unit tests  ❌
-   Contains breaking changes ❌
-   Compatible with: MX 7️⃣, 8️⃣, 9️⃣
-   Did you update version and changelog? ✅ 
-   PR title properly formatted (`[XX-000]: description`)? ✅

## This PR contains

-   [x] Bug fix
-   [ ] Feature
-   [ ] Refactor
-   [ ] Documentation
-   [ ] Other (describe)

## What is the purpose of this PR?
Fix transformation by the commonjs plugin in case the output format is
es and an external library is required.

## Relevant changes
For React client `require` statements to external libraries need to be
rewritten to an `import` statement. However as the externally libraries
were marked as `ignore` in the commonjs plugin configuration those
require statements were left untouched, causing the runtime error
"require is not defined".
This has been resolved by no longer marking external libraries as
`ignored`.

## What should be covered while testing?
Building widget which needs this transformation can be bundled and run
without a custom rollup config. Examples are:

[calendar-web](https://github.com/mendix/web-widgets/tree/1bf7b6306b72156851e831498549e92280234792/packages/pluggableWidgets/calendar-web)

[color-picker-web](https://github.com/mendix/web-widgets/tree/1bf7b6306b72156851e831498549e92280234792/packages/pluggableWidgets/color-picker-web)

[document-viewer-web](https://github.com/mendix/web-widgets/tree/1bf7b6306b72156851e831498549e92280234792/packages/pluggableWidgets/document-viewer-web)

Author: ancajuravle

packages/pluggable-widgets-tools/CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Changed
+
+- We fixed an issue where `require` was not transformed to `import` for the `es` output format which could result in an error when the widget was used in a project with React client enabled.  
+
 ## [11.3.0] - 2025-11-12
 
 ### Changed

packages/pluggable-widgets-tools/configs/rollup.config.mjs

@@ -133,7 +133,7 @@ export default async args => {
                         presets: [["@babel/preset-env", { targets: { safari: "12" } }]],
                         allowAllFormats: true
                     },
-                    external: webExternal,
+                    external: outputFormat === "es" ? [] : webExternal,
                     licenses: production && outputFormat === "amd"
                 })
             ],

packages/pluggable-widgets-tools/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mendix/pluggable-widgets-tools",
-  "version": "11.3.0",
+  "version": "11.3.1",
   "description": "Mendix Pluggable Widgets Tools",
   "engines": {
     "node": ">=20"