`cabal doctest -w` is broken with `cabal-install-0.16.*` and GHC < 9.4.1

[sol]

This is due to: haskell/cabal#11373

[sol]

I don't think doctest can work around this issue.

For the time being, don't use -w with cabal-install-0.16.* and GHC < 9.4.1.

I disabled the corresponding test #485.