fix(sdk): exercise caution in system monitor when rocm-smi is installed on a system with no amd gpus

[dmitryduev]

Description

• Fixes [CLI]: WARNING: No AMD GPUs specified #6757 (hopefully, needs verification)
• Fixes WB-17118

What does the PR do?

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Testing

How was this PR tested?

[codecov]

Codecov Report

Attention: 36 lines in your changes are missing coverage. Please review.

Comparison is base (2165475) 79.71% compared to head (74954a1) 76.66%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6938      +/-   ##
==========================================
- Coverage   79.71%   76.66%   -3.06%     
==========================================
  Files         462      462              
  Lines       52685    52721      +36     
==========================================
- Hits        41999    40417    -1582     
- Misses      10391    12006    +1615     
- Partials      295      298       +3     

Flag	Coverage Δ
func	47.36% <17.02%> (-1.40%)	⬇️
system	57.86% <17.02%> (-4.12%)	⬇️
unit	59.25% <23.40%> (-0.21%)	⬇️

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Files	Coverage Δ
wandb/sdk/internal/system/assets/gpu_amd.py	76.98% <23.80%> (-9.86%)	⬇️
core/pkg/monitor/gpu_amd.go	74.55% <23.07%> (-6.95%)	⬇️

... and 76 files with indirect coverage changes

[kptkin]

🙏