Resolve bugs in create_node_with_local_data

[jsiirola]

Fixes # .

Summary/Motivation:

IDAES/idaes-pse#1454 found bugs in ExpressionData's implementation of create_node_with_local_data(). In particular, ScalarExpression.create_node_with_local_data was returning an unconstructed ScalarExpression. This PR resolves that bug (and another found when debugging create_node_with_local_data)

Changes proposed in this PR:

• ExpressionData.create_node_with_local_data: always return a bare ExpressionData object, even if the original Expression was a ScalarExpression.
• Fixing an issue where MonomialTermExpression.create_node_with_local_data was ignoring the user-specified classtype argument
• Test both fixes

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

All modified and coverable lines are covered by tests ✅

Project coverage is 88.63%. Comparing base (f32f122) to head (9c287c1).
Report is 12 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3376   +/-   ##
=======================================
  Coverage   88.63%   88.63%           
=======================================
  Files         879      879           
  Lines      100221   100223    +2     
=======================================
+ Hits        88827    88832    +5     
+ Misses      11394    11391    -3     

Flag	Coverage Δ
linux	86.27% <100.00%> (+<0.01%)	⬆️
osx	75.65% <100.00%> (+<0.01%)	⬆️
other	86.76% <100.00%> (+<0.01%)	⬆️
win	84.02% <100.00%> (+<0.01%)	⬆️

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[mrmundt]

This is clever, I like this.