Fetching featured versions for some projects is incredibly slow

[JustAlittleWolf]

Please confirm the following.

• I checked the existing issues for duplicate problems
• I have tried resolving the issue using the support portal

Describe the bug

An api call to projects with lots of versions is still generally fast. For example requesting all versions of the viaversion project (648 versions at the time of writing) only takes about 0.8s:

time curl https://api.modrinth.com/v3/project/viaversion/version &> /dev/null

real    0m0.810s
user    0m0.023s
sys     0m0.000s

However, when fetching the featured versions, it takes more than 6 seconds!

time curl https://api.modrinth.com/v3/project/viaversion/version?featured=true &> /dev/null

real    0m6.825s
user    0m0.013s
sys     0m0.007s

This is especially annoying, since the featured versions are fetched for each project page load as seen here, which causes the viaversion project page to take over 6 seconds to load every time (and they aren't even displayed!).

At this point it would be faster to fetch all versions with https://api.modrinth.com/v3/project/viaversion/version and then filter them by featured versions client-side.

Interestingly, the same thing does not occur with the project fabric-api, which has even more (882 at the time of writing) versions:

time curl https://api.modrinth.com/v3/project/fabric-api/version &> /dev/null

real    0m0.586s
user    0m0.022s
sys     0m0.000s

time curl https://api.modrinth.com/v3/project/fabric-api/version?featured=true &> /dev/null

real    0m0.546s
user    0m0.018s
sys     0m0.000s

This leads me to believe, that the large amout of listed compatible game_versions in the case of viaversion slows down the code here.

Steps to reproduce

1. run time curl https://api.modrinth.com/v3/project/viaversion/version &> /dev/null
2. then run time curl https://api.modrinth.com/v3/project/viaversion/version?featured=true &> /dev/null

the second request takes more than 8x to complete

Expected behavior

fetching the featured versions should be roughly as fast as fetching all versions.

Additional context

No response