CI/CD - Update label in the ROCm image build

[polarG]

Due to the matrix strategy’s default "fail-fast" setting. In GitHub Actions, when running a job with a matrix, the individual configurations run in parallel. By default, if one matrix job (for example, the one labeled "rocm6_2_rocm6_2_x_superbe") fails, the remaining parallel jobs are canceled automatically.

In our current build image pipeline, the arm64 build job always are canceled by the rocm build job. So, using a non-existent label in the job config to prevent rocm build job from scheduling for a temporary solution.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.67%. Comparing base (5e32859) to head (27962af).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #693   +/-   ##
=======================================
  Coverage   85.67%   85.67%           
=======================================
  Files          99       99           
  Lines        7211     7211           
=======================================
  Hits         6178     6178           
  Misses       1033     1033           

Flag	Coverage Δ
cpu-python3.10-unit-test	71.37% <ø> (ø)
cpu-python3.12-unit-test	71.37% <ø> (ø)
cpu-python3.7-unit-test	71.34% <ø> (ø)
cuda-unit-test	83.50% <ø> (ø)

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[abuccts]

pls update the title/description accordingly as well