Media splitting: don't copy the media folder to the build directory

[iseulde]

These are not used when SCRIPT_DEBUG is on.

[iseulde]

Maybe better to keep the old file structure? Not sure. Makes the tasks a bit simpler as well.

[netweb]

Moving this ticket also to the Build Tools component as I did for #31911, these tickets are more about how we build and compile assets rather than the media component functionality :)

[iseulde]

Cool, sorry. :)

[netweb]

Replying to iseulde:

Cool, sorry. :)

Apologies not required :)

[ocean90]

We won't delete the files, rather copy/move the existing ones so the history remains. Based on the patch this seems to be the follow changes:

• /src/wp-includes/js/media/audio-video.manifest.js => /src/wp-includes/js/media/audiovideo.manifest.js
• /src/wp-includes/js/media/audio-video.js => /src/wp-includes/js/media-audiovideo.js
• /src/wp-includes/js/media/grid.js => /src/wp-includes/js/media-grid.js
• /src/wp-includes/js/media/models.js => /src/wp-includes/js/media-models.js
• /src/wp-includes/js/media/views.js => /src/wp-includes/js/media-views.js

31912.2.patch​ includes only the changes for the build task and the script loader.

[wonderboymusic]

In 32125:

Move the built media JS files up a directory to their previous location and naming convention. This fidgets with part of [31373] and will maintain BC for those who were loading those files directly (not using the enqueue system).

Props iseulde, ocean90.
Fixes #31912.