KKT Transform Code Refactor

[ChrisLaliwala]

Fixes # .

Summary/Motivation:

This PR refactors the KKT transformation code (see PR #3860) to make it more efficient. In the original PR, it was suggested by @jsiirola that the order of operations be reversed to avoid repeated work and the use of unintuitive data structures.

Changes proposed in this PR:

• Refactors code to increase efficiency
• Simplifies API for getting multipliers/components from model

Legal Acknowledgement

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1. I agree my contributions are submitted under the BSD license.
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[ChrisLaliwala]

@jsiirola

[codecov]

Codecov Report

❌ Patch coverage is 99.09091% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 89.94%. Comparing base (6baac63) to head (e4c8a56).

Files with missing lines	Patch %	Lines
pyomo/core/plugins/transform/kkt.py	99.09%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #3881    +/-   ##
========================================
  Coverage   89.93%   89.94%            
========================================
  Files         902      903     +1     
  Lines      106393   106503   +110     
========================================
+ Hits        95683    95791   +108     
- Misses      10710    10712     +2     

Flag	Coverage Δ
builders	29.18% <19.09%> (-0.02%)	⬇️
default	86.25% <99.09%> (?)
expensive	35.62% <19.09%> (?)
linux	87.39% <99.09%> (-2.02%)	⬇️
linux_other	87.39% <99.09%> (+0.01%)	⬆️
oldsolvers	28.09% <19.09%> (-0.01%)	⬇️
osx	82.73% <99.09%> (+0.01%)	⬆️
win	85.82% <99.09%> (+<0.01%)	⬆️
win_other	85.82% <99.09%> (+<0.01%)	⬆️

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[jsiirola]

This is really close! Just a couple minor changes...