Make sure run dialog is closed in gui test

[larsevj]

Ensure that the run dialog is closed in test_that_a_failing_job_shows_error_message_with_context

• 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 91.38%. Comparing base (9f8d73a) to head (b1e1d04).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8841   +/-   ##
=======================================
  Coverage   91.37%   91.38%           
=======================================
  Files         342      342           
  Lines       21028    21028           
=======================================
+ Hits        19215    19217    +2     
+ Misses       1813     1811    -2     

Flag	Coverage Δ
cli-tests	39.62% <ø> (+0.01%)	⬆️
gui-tests	73.55% <ø> (-0.03%)	⬇️
performance-tests	50.09% <ø> (+0.03%)	⬆️
unit-tests	79.82% <ø> (+<0.01%)	⬆️

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