Add docs explain new flag css trigger static content

[mrtuvn]

Purpose of this pull request

This pull request (PR) Add content for explain code recent added

Affected pages

• Add end existing page https://developer.adobe.com/commerce/frontend-core/guide/css/preprocess/#magento_import-directive

Links to Magento Open Source code

Code

[jeff-matthews]

Thanks for the PR @mrtuvn!

I confirmed internally that this will be available in the 2.4.8-beta1 release in October. I'm going to create a 2.4.8-develop integration branch in this repo for this before assigning for review.

[jeff-matthews]

Changed base branch to integration branch.

[jeff-matthews]

Hi @mrtuvn,

I just wanted to let you know that I've started reviewing this PR and will have suggestions later this week.

[jeff-matthews]

@mrtuvn,

What do you think about adding this content to the existing page about CSS and LESS preprocessing? Specifically under the @magento_import directive?

[mrtuvn]

updated as your suggestions

[jeff-matthews]

Thanks @mrtuvn! I made some editorial suggestions to align with our style and formatting. It might be difficult to see in the GitHub suggestions, so I'm also attaching a .md file of what the changes should look like.

css-flag.md

[jeff-matthews]

Thanks @mrtuvn. I'm going to merge this into a separate integration branch and do the rest of the formatting.