Made Ibexa DXP webpack modules work properly with symlinks

[Steveb-p]

🎫 Issue	IBX-XXXXX

Description:

This PR fixes an issue that happens when developing frontend code using packages symlinked by Composer.

Issue stems from the fact that subpackage tries to load their own instance of @symfony/webpack-encore. Under normal circumstances (without symlinks) the project's one is selected. However, with symlinks, that module is no longer reachable - as it does not appear in any of the parent directories of package directory (since it resides elsewhere entirely).

To prevent this issue, I propose that we expect webpack.config.js modules exported from the package to be callables instead (in actuality, allow the to be callables). The exported function would expect to receive an instance of Symfony's Encore as first argument. This also ensures that they will actually receive a global Encore object.

For QA:

Documentation:

[github-actions]

Thanks for contribution! 🎉

To test the changes please execute:

composer config extra.symfony.endpoint https://api.github.com/repos/ibexa/recipes-dev/contents/index.json?ref=flex/pull-192

before executing the recipes.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud