Collections: change "Prefer Exact" mod version selection logic

[LukeNexusMods]

Investigate the logic for the different collection file options and make sure we are doing the right thing for each one.

Currently we are downloading the exact version indicated in the collection manifest, even if that version was archived.
Vortex picks the most recent version in case the file was archived instead.

Some questions:
We could still be grabbing an archived mod depending on when we do the check.
When do we perform the check for which mod version to download?

• Only once at collection fetch then never again?
• At the moment of download of the mod?
• Re-check every time and mark as outdated even if already downloaded?

If we want to check after the initial collection fetch, we need to store that information somewhere.

[Pickysaurus]

https://modding.wiki/en/nexusmods/collections/create/mod-options#install-options