Fix rerunning on mda

[jonathan-eq]

Issue
Resolves #9467

Approach
Disable the rerun failed button in gui, and remove unused mock methods in BRM tests

(Screenshot of new behavior in GUI if applicable)

• 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

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.85%. Comparing base (ad786d8) to head (68de803).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9492      +/-   ##
==========================================
+ Coverage   91.83%   91.85%   +0.01%     
==========================================
  Files         434      434              
  Lines       26763    26764       +1     
==========================================
+ Hits        24579    24585       +6     
+ Misses       2184     2179       -5     

Flag	Coverage Δ
cli-tests	39.37% <100.00%> (+<0.01%)	⬆️
everest-models-test	34.73% <0.00%> (-0.01%)	⬇️
gui-tests	72.15% <100.00%> (+0.03%)	⬆️
integration-test	37.00% <0.00%> (-0.01%)	⬇️
performance-tests	51.91% <0.00%> (-0.02%)	⬇️
test	40.67% <0.00%> (-0.01%)	⬇️
unit-tests	74.06% <100.00%> (+0.01%)	⬆️

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[xjules]

Makes sense! 🚀