Description expansion in runs page

[kamoltat]

Because of this PR: #49
we might have to wait?

[VallariAg]

The PR is merged so we can pick this up now.

Explanation of the task

Try clicking "Show Description" button on this page: https://pulpito.ceph.com/teuthology-2024-07-09_21:16:03-rbd-squid-distro-default-smithi/
Viewing descriptions of jobs is missing on pulpito-ng.

In pulpito.ceph.com, I click "show description" on a particular run page and then CTRL+F search for my job.
Since jobs are paginated on pulpito-ng, adding a search/filter in description column might be helpful for big runs!