fix(theseus-gui): fix sort/group by game version

[tippfehlr]

Note: PR #1025 has been reopened following the switch to a monorepo organization.

In the Library, game version 1.8.9 is sorted/grouped after 1.20 because the default sorting sorts 2 < 8 therefore localeCompare(with numeric=true) is needed, it detects 8 < 20 and puts the versions in the correct order.