Remove NonNegativeReals from main repo

[dallan-keylogic]

Fixes

#1795

Summary/Motivation:

The domain NonNegativeReals is redundant when bounds are defined and silently truncates user bounds that are lower than zero. In reviewing the repo, I found some modeling mistakes in the enthalpy state variables for the modular properties. The domain was improperly set to NonNegativeReals, and the user would be none the wiser if they used a negative lower bound.

Legal Acknowledgement

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1. I agree my contributions are submitted under the license terms described in the LICENSE.txt file at the top level of this directory.
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 is 25.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.56%. Comparing base (a60fbf8) to head (176bc19).

Files with missing lines	Patch %	Lines
idaes/models/costing/SSLW.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1829   +/-   ##
=======================================
  Coverage   77.56%   77.56%           
=======================================
  Files         423      423           
  Lines       67529    67529           
  Branches    11420    11420           
=======================================
  Hits        52379    52379           
  Misses      12531    12531           
  Partials     2619     2619           

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