Change layout to make plugin-specific content more clear

This needs a rebase that contains the latest changes. After that, we should review again and try to prioritize it to the top of the RTBC as all the feedback has been addressed.

Rebased with latest changes.

Some really minor things:

1. Page size selector not aligned to page numbers when on the first page:

2. Result count mixed up with plugin name, probably should jump to new line:

Marking NR to get testing to run.

I re-tested everything in drupalpod and re-reviewed the code. All the feedback given in the previous comments has been addressed.
I pointed out just one minor styling thing, but not sure if it's worth putting it as NW.

I'm marking it as RTBC, but if somebody wants to do that minor change in this issue, as long as that's the only change, the issue can continue being RTBC.

Thanks so much for all the effort put into this!

I retested the last commit on drupalpod and it all works as expected, so keeping the RTBC.

I rebased this after committing 📌 Fix test fails from upstream TUF changes Fixed and then also removed the remaining out-of-scope test changes. Not sure where those came from, but it passes without them.

Automatically closed - issue fixed for 2 weeks with no activity.