Fix for colors with multiple progress bars

[ponyisi]

When there are several in-flight transformations, a failure in one would cause all progress bars to be marked as red (until they completed). This is misleading; transforms that have not failed should still be green. This fix makes only the broken transforms show up as red.

[codecov]

Codecov Report

Attention: Patch coverage is 82.06442% with 245 lines in your changes missing coverage. Please review.

Project coverage is 82.06%. Comparing base (1b1c19c) to head (394b3fa).
Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
servicex/app/transforms.py	50.00%	51 Missing ⚠️
servicex/app/cache.py	0.00%	39 Missing ⚠️
servicex/func_adl/util.py	13.95%	37 Missing ⚠️
servicex/func_adl/func_adl_dataset.py	68.75%	30 Missing ⚠️
servicex/app/main.py	0.00%	20 Missing ⚠️
servicex/configuration.py	76.38%	17 Missing ⚠️
servicex/app/codegen.py	0.00%	16 Missing ⚠️
servicex/func_adl/func_adl_dataset_group.py	0.00%	16 Missing ⚠️
servicex/servicex_client.py	94.54%	9 Missing ⚠️
servicex/expandable_progress.py	91.66%	7 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #459      +/-   ##
==========================================
+ Coverage   80.14%   82.06%   +1.91%     
==========================================
  Files          26       26              
  Lines        1355     1366      +11     
==========================================
+ Hits         1086     1121      +35     
+ Misses        269      245      -24     

Flag	Coverage Δ
unittests	82.06% <82.06%> (+1.91%)	⬆️

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[ketan96-m]

Thank you for refactoring this, it makes it cleaner