Addressing Demo Flowsheet (Scaling) Failures

[MarcusHolly]

Fixes

#1198

Summary/Motivation:

This flowsheet has run into scaling issues before, and they seem to have popped back up again...

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (aa5212a) 76.66% compared to head (405c5ac) 76.87%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1266      +/-   ##
==========================================
+ Coverage   76.66%   76.87%   +0.20%     
==========================================
  Files         382      382              
  Lines       61615    61624       +9     
  Branches    11382    11382              
==========================================
+ Hits        47240    47375     +135     
+ Misses      11905    11780     -125     
+ Partials     2470     2469       -1     

Files	Coverage Δ
idaes/models/flowsheets/demo_flowsheet.py	94.35% <100.00%> (+69.62%)	⬆️

... and 1 file with indirect coverage changes

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[MarcusHolly]

@andrewlee94 Can you double check that all the tests are passing on your end too?

[andrewlee94]

This is still failing locally for me, but that could just be my local environment (which is due for a refresh).

[bpaul4]

Confirmed that the flowsheet and tests run successfully in my local environment, using the latest main branch and latest release.