checkInputs used to be added to nativeBuildInputs. Now we have
nativeCheckInputs to do that instead. Doing this treewide change allows
to keep hashes identical to before the introduction of
nativeCheckInputs.
The package was still using `disabledTestFiles` which should have been
migrated to `disabledTestPaths`, which led to reinclusion of a test file
that requires a dependency (oslotest), which we have not packaged yet.
