Update nvhpc.yml to NVHPC 25.9 and CUDA 13.0

[hyoklee]

Summary

Updates the nvhpc.yml GitHub Action workflow to use NVHPC compiler version 25.9 and CUDA 13.0, and updates the MPI library paths to use hpcx instead of openmpi4.

Changes

• Updated CUDAVERDOT from "12.9" to "13.0"
• Updated NVERDOT from "25.7" to "25.9"
• Updated NVERDASH from "25-7" to "25-9"
• Updated all MPI paths from openmpi4/bin to hpcx/bin

These changes align with the current NVHPC SDK 25.9 distribution which uses hpcx for MPI libraries.

Test Plan

• GitHub Actions workflow runs successfully with new NVHPC 25.9 and CUDA 13.0
• MPI tests pass with hpcx MPI library

Closes #5917

🤖 Generated with Claude Code

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Important

Update nvhpc.yml to NVHPC 25.9, CUDA 13.0, and switch MPI library to HPCX.

• Environment Variables:
  • Update CUDAVERDOT to "13.0" and NVERDOT to "25.9" in nvhpc.yml.
  • Update NVERDASH to "25-9" in nvhpc.yml.
• MPI Library:
  • Change MPI paths from openmpi4/bin to hpcx/bin in nvhpc.yml.
• Purpose:
  • Aligns with NVHPC SDK 25.9 distribution using HPCX for MPI.

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