test: fix tests on mips

Mips has a different way of handling NaN. This makes sure the tests pass on MIPS as well.

This partially fix-es #20336 (closed) (the - is there to prevent github to close the issue).

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines