Preserve query params in StaticFileHandler redirects

[syeopite]

Closes #15788

Preserve query parameters when HTTP::StaticFileHandler performs a redirect

http://localhost:12345//route?k=v --> http://localhost:12345/route?k=v

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I can't actually confirm if the specs itself pass because I'm not able to build std_spec locally for some reason. But it works correctly when running the same code on an isolated script with a locally built compiler.

[straight-shoota]

If you cannot build std_spec, maybe you can run just bin/crystal spec spec/std/http/server/handlers/static_file_handler_spec.cr?

[syeopite]

If you cannot build std_spec, maybe you can run just bin/crystal spec spec/std/http/server/handlers/static_file_handler_spec.cr?

Yeah that works.

I managed to also get std_spec working as well after installing lld so thankfully (well depending on how you look at it) the culprit was just due to issue 13193.