Removes default scope from sortable

How I found where order was needed

• grep "include Sortable to see what models were using it.
• Found previous commits through git blame where Sortable was included (https://gitlab.com/gitlab-org/gitlab-ce/commit/37bf35f0bcba28e271789542fb8c81a6c77236b6, https://gitlab.com/gitlab-org/gitlab-ce/commit/c0faf91ff23815404a95cf4510b43dcf5e331c4f, https://gitlab.com/gitlab-org/gitlab-ce/commit/e0aa5c371ea1c633a0648f13cd7bea35f3aea75c, https://gitlab.com/gitlab-org/gitlab-ce/commit/62ed1c537e9b8aa85d354b377f18083fb71b8e05)
• Removed the default_scope and found which specs were failing.

There is a high possibility that this MR will not fix all the places where order is needed

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests added for this feature/bug
• Review
  • Has been reviewed by UX
  • Has been reviewed by Frontend
  • Has been reviewed by Backend
  • Has been reviewed by Database
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together

What are the relevant issue numbers?

Closes #23079 (closed)