More hierarchical parallelism wrappers in VertCoord.cpp

[mwarusz]

Some parallel loops in VertCoord.cpp predate the introduction of hierarchical parallelism wrappers. I made copilot update them.

Checklist

• Linting
  • Pre-commit run locally
• Building
  • CMake build does not produce any new warnings from changes in this PR
• Testing
  • Add a comment to the PR titled Testing with the following:
    • Which machines CTest unit tests
      have been run on and indicate that are all passing.
    • The Polaris omega_pr test suite
      has passed, using the Polaris e3sm_submodules/Omega baseline
    • Document machine(s), compiler(s), and the build path(s) used for -p for both the baseline (Polaris e3sm_submodules/Omega) and the PR build
    • Indicate "All tests passed" or document failing tests

[brian-oneill]

Approved based on inspection and successful execution of ctests on Chrysalis, pm-cpu, and pm-gpu

[mwarusz]

Testing

CTest unit tests:

Machine: pm-cpu
Compiler: gnu
Build type: Release
Result: All 39 tests passed
Log: /pscratch/sd/m/mwarusz/omega-pr-testing/vert-coord-hipar/build-pm-cpu-gnu/Testing/Temporary/LastTest.log

CTest unit tests:

Machine: pm-gpu
Compiler: gnugpu
Build type: Release
Result: All 39 tests passed
Log: /pscratch/sd/m/mwarusz/omega-pr-testing/vert-coord-hipar/build-pm-gpu-gnugpu/Testing/Temporary/LastTest.log

Polaris omega_pr suite:

Machine: pm-cpu
Compiler: gnu
Baseline workdir: /pscratch/sd/m/mwarusz/omega-pr-testing/vert-coord-hipar/baseline-pm-cpu-gnu
Baseline build: /pscratch/sd/m/mwarusz/omega-pr-testing/vert-coord-hipar/baseline-pm-cpu-gnu/build
PR build: /pscratch/sd/m/mwarusz/omega-pr-testing/vert-coord-hipar/build-pm-cpu-gnu
PR workdir: /pscratch/sd/m/mwarusz/omega-pr-testing/vert-coord-hipar/pr-pm-cpu-gnu
Build type: <Release>
Log: /pscratch/sd/m/mwarusz/omega-pr-testing/vert-coord-hipar/pr-pm-cpu-gnu/polaris_omega_pr.o50039678
Result: All tests passed

Note: Similarly to #361, the baseline was with the current develop.