PostContingencyResult status fix

[Lisrte]

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines
• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?

No

What kind of change does this PR introduce?

Bug fix

What is the current behavior?

PostContingencyResult status is set to CONVERGED if a result file is found, but the proper status is never parsed.

What is the new behavior (if this is a feature change)? Parse aggregatedResults.xml and use it for PostContingencyResult status

Does this PR introduce a breaking change or deprecate an API?

• [ ] Yes
• [x] No

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
82.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud