amrex: support sundials variant in newer amrex versions (#25745)
amrex: support sundials variant in newer amrex versions (#25745)

* amrex: support sundials variant in newer amrex versions

* propagate cuda_arch to sundials

* change to old string formatting

* require sundials+rocm when amrex+rocm
LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack