Show error when everest fm_step reaches MAX_RUNTIME

[DanSava]

Issue
Resolves #8760

Approach

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure unit tests pass locally after every commit (git rebase -i main --exec 'pytest tests/ert/unit_tests -n logical -m "not integration_test"')

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Create Backport PR to latest release

[codspeed-hq]

CodSpeed Performance Report

Merging #9522 will not alter performance

_{Comparing DanSava:report-max-runtime-error (91c661a) with main (e5c7953)}

Summary

✅ 22 untouched benchmarks

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.86%. Comparing base (d875982) to head (91c661a).
Report is 39 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9522      +/-   ##
==========================================
+ Coverage   91.64%   91.86%   +0.22%     
==========================================
  Files         433      433              
  Lines       26722    26780      +58     
==========================================
+ Hits        24489    24602     +113     
+ Misses       2233     2178      -55     

Flag	Coverage Δ
cli-tests	39.74% <0.00%> (+0.33%)	⬆️
everest-models-test	34.58% <0.00%> (?)
gui-tests	72.12% <0.00%> (-0.09%)	⬇️
integration-test	37.18% <27.27%> (-0.08%)	⬇️
performance-tests	51.95% <0.00%> (-0.05%)	⬇️
test	40.70% <100.00%> (+0.19%)	⬆️
unit-tests	74.17% <0.00%> (+0.05%)	⬆️

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[oyvindeide]

Looks good! I have some minor comments regarding the test that you can take into account if you agree.The patch comment should probably be in a separate commit if you end up doing it.