refactor(cli/unstable): make ProgressBar.#print() better readable

[timreichen]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.29%. Comparing base (48fae8f) to head (165f3b2).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6503      +/-   ##
==========================================
- Coverage   95.30%   95.29%   -0.01%     
==========================================
  Files         575      575              
  Lines       43279    43266      -13     
  Branches     6467     6467              
==========================================
- Hits        41247    41231      -16     
- Misses       1993     1995       +2     
- Partials       39       40       +1     

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[kt3k]

LGTM. Thanks