Fix ChainDB q-s-m test on Windows

[dnadales]

On Windows, the ChainDB q-s-m test either takes ages (2-3h, compared to <2min on Linux) to complete, or fails with very obscure error messages. This happens both on “real” Windows machines and via Wine.

[amesgen]

We now disabled the test in input-output-hk/ouroboros-network#3942 for the time being, but the core issue remains.

[jasagredo]

Closed as we don't run this in CI anymore

[amesgen]

Huh, shouldn't we keep this open to eventually enable the test again? AFAIK, it might be as simple as reenabling it once we drop GHC 8.10.

[jasagredo]

Hmm, ok 😄 I thought we were not going to test Windows on our CI

[amesgen]

(We indeed currently don't test native Windows, but we do test cross-compiled Windows via haskell.nix.)