Fix cases not handled in previous supplemental attribute PRs

[daniel-thom]

• Removal of attributes that were attached to multiple components did not work.
• Searches of components by UUID was slow. This adds an extra dictionary to provide lookup by UUID.

[codecov]

Codecov Report

Attention: 19 lines in your changes are missing coverage. Please review.

Comparison is base (5558f83) 78.35% compared to head (6026356) 78.46%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #321      +/-   ##
==========================================
+ Coverage   78.35%   78.46%   +0.10%     
==========================================
  Files          51       51              
  Lines        4084     4123      +39     
==========================================
+ Hits         3200     3235      +35     
- Misses        884      888       +4     

Flag	Coverage Δ
unittests	78.46% <70.31%> (+0.10%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/supplemental_attribute.jl	80.85% <100.00%> (-1.38%)	⬇️
src/component.jl	94.44% <66.66%> (-1.53%)	⬇️
src/supplemental_attributes.jl	79.16% <12.50%> (-3.49%)	⬇️
src/system_data.jl	90.12% <82.05%> (+1.17%)	⬆️

... and 2 files with indirect coverage changes