Make sure event loop is running before running coroutines in executor

[jonathan-eq]

Issue
Resolves #9307

Approach
Make sure event loop is running before running coroutines in executor

(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 91.73%. Comparing base (719a81e) to head (5934c72).
Report is 13 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #9664       +/-   ##
===========================================
+ Coverage   80.54%   91.73%   +11.19%     
===========================================
  Files         428      430        +2     
  Lines       26619    26668       +49     
===========================================
+ Hits        21439    24463     +3024     
+ Misses       5180     2205     -2975     

Flag	Coverage Δ
cli-tests	39.69% <100.00%> (+<0.01%)	⬆️
everest-models-test	34.16% <50.00%> (-0.04%)	⬇️
gui-tests	71.81% <50.00%> (-0.01%)	⬇️
integration-test	38.27% <50.00%> (-0.05%)	⬇️
performance-tests	51.66% <50.00%> (-0.03%)	⬇️
test	39.59% <50.00%> (-0.04%)	⬇️
unit-tests	73.99% <100.00%> (?)

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[codspeed-hq]

CodSpeed Performance Report

Merging #9664 will improve performances by 13.32%

_{Comparing jonathan-eq:fix-bugs2 (5934c72) with main (18fb2b1)}

Summary

⚡ 1 improvements
✅ 23 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	jonathan-eq:fix-bugs2	Change
⚡	test_direct_dark_performance_with_storage[gen_x: 20, sum_x: 20 reals: 10-gen_data-get_record_observations]	1.6 ms	1.4 ms	+13.32%

[eivindjahren]

This seems to put the application in a bad state in case the condition is ever false.

[jonathan-eq]

I was unable to reproduce this with asyncio, but it was possible when using lower level ThreadPoolExecutor. https://superfastpython.com/threadpoolexecutor-shutdown/