ompi_info needs to be more accurate about fortran f08 support

[hppritcha]

Turns out we need to do some updates to the f08 related parts of the Open MPI configury. This was noticed in checking the fortran f08 support related output from ompi_info - when using a compiler which is stated by the vendor to be fully fortran 2018 compliant - https://www.intel.com/content/www/us/en/developer/articles/release-notes/fortran-compiler/2025.html. For example, MPI_SUBARRAYS_SUPPORTED is hardwired to false in mpif-config.h.in.

related to #13239