Media grid is lacking styles

Here is the changes I added to make it work.

There is a patch for this already in #3383658-13: Images in media browser have no hover effect and selected effect in media browser → which can be tested. This one will make seven theme as a dependency which is a contrib theme in D10 and is most likely not installed most of the sites anymore.

Thank you @rang501.

But id did not solved my problem, you see I am using adminimal which is based on seven, so the patch from 3383658 did not worked for me.

Maybe it could be modified to be used on themes based off of seven.