Run compile-storybook as-if-foss for storybook config changes

What does this MR do and why?

This MR runs compile-storybook as-if-foss job when storybook config file change is introduced in merge requests in gitlab project.

This will catch any potential master:foss-broken issue such as #379242 (closed) before gitlab-foss project runs compile-storybook job in the pipeline.

Closes #379251 (closed)

Testing

Tested changes on !102453 (closed).

File Change	Result
when storybook/config/preview.js changes (e273fab1)	✅ compile-storybook as-if-foss is created https://gitlab.com/gitlab-org/gitlab/-/pipelines/680266423#/
Regression: when app/assets/javascripts/pipelines.js changes (24c92582)	✅ compile-storybook as-if-foss job is created ✅ NO yaml invalid error is found https://gitlab.com/gitlab-org/gitlab/-/pipelines/680262206#/

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.