[test][spinboxes] Ensure that numpy_type property works as expected

Ensure that:
- If type is different, signal is emitted and type properly changed
- If type is same, nothing happens
2 jobs for 212_generic_spinboxes_numpy_types_int_uint_float in 8 minutes and 27 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Build
passed #163928
docker-build
build_linux_36

00:06:25

passed #163929
macosx
build_macosx_36

00:08:27