mom5: add oneapi 2025 compiler support

[harshula]

Testing

ifx:

[om2] [gadi-login-05 spack-packages]$ spack find mom5
==> In environment om2
==> 1 root specs
[+] access-om2@access-om2

==> Installed packages
-- linux-rocky8-x86_64 / oneapi@2025.0.4 ------------------------
mom5@git.2025.03.001=access-om2
==> 1 installed package

ifort:

[root@763ade9cfb88 opt]# spack find mom5
-- linux-rocky8-x86_64 / intel@2021.10.0 ------------------------
mom5@git.2025.03.001=access-om2
==> 1 installed package

[aidanheerdegen]

LGTM.