Admin Page: module search results should respect module sort order

#### Steps to reproduce the issue

1. Go to Jetpack > Settings
2. Search for 'search'
3. The actual Search module is at the bottom of the list of results.

Maybe we could improve that by having the list order respect the modules' sort orders in the module headings?
https://github.com/Automattic/jetpack/blob/branch-5.8/modules/seo-tools.php#L6
https://github.com/Automattic/jetpack/blob/branch-5.8/modules/search.php#L7

Reproduce the issue in Jetpack > Settings by searching for “search,” then inspect modules/seo-tools.php and modules/search.php at the linked heading lines. Trace the admin module search ordering and verify that matching results follow the sort order defined in the module headings.

Written by the indexing model from the issue text.