Accessibility: on the Updates screen, remove a redundant title attribute.

Removes the title attribute from the Plugin details link and adds the Plugin name hidden with `screen-reader-text` within the link text.

Props Cheffheid.
Fixes #35001.
Built from https://develop.svn.wordpress.org/trunk@35866


git-svn-id: https://core.svn.wordpress.org/trunk@35830 1a063a9b-81f0-0310-95a4-ce76da25c4cd