[Pyomo.DoE] Replace computationally expensive test example with Rooney Biegler

[smondal13]

Summary/Motivation:

Most unit tests within pyomo/contrib/doe/tests utilized the reactor_example.py example, which is computationally expensive for the scope of these tests. This resulted in unnecessarily long execution times for the test suite.

This PR replaces the reactor_example.py with the simpler rooney_biegler_doe_example.py example in the tests. This change maintains the validity of the tests while significantly reducing computational overhead.

Performance Impact (MacBook with M4 chip):

Before: ~20 seconds

After: ~12 seconds

Improvement: ~40% reduction in test execution time.

Changes proposed in this PR:

• Replaced usage of reactor_example.py with rooney_biegler_doe_example.py in pyomo/contrib/doe/tests.
• Updated relevant assertions to match the rooney_biegler_doe_example.py model structure.
• Reduced the number of points calculated for sensitivity plotting.

Note:

This PR relies on PR #3803

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.

[smondal13]

@blnicho @adowling2 This PR is ready for initial design review.

@blnicho, one of the tests is failing. Can you please take a look?

Note: This PR depends on #3803

[adowling2]

@sscini I recommend you take a look at this. It is related to some of your other PRs.

[blnicho]

I found a few spots where the code could be cleaned up and have some suggestions for making some of the tests stronger.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 89.65%. Comparing base (4e91199) to head (2950472).
⚠️ Report is 23 commits behind head on main.

Files with missing lines	Patch %	Lines
.../parmest/examples/rooney_biegler/rooney_biegler.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3828      +/-   ##
==========================================
- Coverage   89.66%   89.65%   -0.01%     
==========================================
  Files         902      902              
  Lines      105609   105611       +2     
==========================================
- Hits        94696    94688       -8     
- Misses      10913    10923      +10     

Flag	Coverage Δ
builders	29.04% <66.66%> (+<0.01%)	⬆️
default	83.76% <66.66%> (?)
expensive	35.51% <66.66%> (?)
linux	86.96% <66.66%> (-2.44%)	⬇️
linux_other	86.96% <66.66%> (-0.01%)	⬇️
oldsolvers	29.68% <0.00%> (+<0.01%)	⬆️
osx	83.12% <66.66%> (-0.01%)	⬇️
win	85.20% <66.66%> (-0.02%)	⬇️
win_other	85.20% <66.66%> (-0.02%)	⬇️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.