Bugfix: component indexes specified as lists

[jsiirola]

Fixes #2764

Summary/Motivation:

There was an error resolving unhashable indexes that were convertible to tuples (e.g. passing the index as a list). This PR resolves that bug.

Changes proposed in this PR:

• correct processing of unhashable indexes that are easily convertable to tuples
• add a test for indexing components with lists

Legal Acknowledgement

By contributing to this software project, I have read the contribution guide and agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the BSD license.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change

Comparison is base (a47fa92) 86.96% compared to head (bdbc14e) 86.96%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2765   +/-   ##
=======================================
  Coverage   86.96%   86.96%           
=======================================
  Files         752      752           
  Lines       86600    86599    -1     
=======================================
+ Hits        75313    75314    +1     
+ Misses      11287    11285    -2     

Flag	Coverage Δ
linux	83.95% <100.00%> (+<0.01%)	⬆️
osx	73.37% <100.00%> (-0.01%)	⬇️
other	84.13% <100.00%> (-0.01%)	⬇️
win	81.45% <100.00%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
pyomo/core/base/indexed_component.py	90.24% <100.00%> (-0.03%)	⬇️
pyomo/solvers/plugins/solvers/ASL.py	91.42% <0.00%> (-1.43%)	⬇️
pyomo/contrib/mindtpy/algorithm_base_class.py	81.13% <0.00%> (+0.33%)	⬆️

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