Increase idle state monitor grace periode

[remcowesterhoud]

Description

We have a bunch of tests that are flaky on the slow GitHub runners, because they think the engine is idle when it isn't.

At some point #133 might be a better solution for this, but this issue doesn't have my priority for now and these flaky tests are bothering me.

Related issues

closes #178

Definition of Done

Not all items need to be done depending on the issue and the pull request.

Code changes:

• The changes are backwards compatibility with previous versions
• If it fixes a bug then PRs are created to backport the fix

Testing:

• There are unit/integration tests that verify all acceptance criterias of the issue
• New tests are written to ensure backwards compatibility with further versions
• The behavior is tested manually

Documentation:

• Javadoc has been written
• The documentation is updated

[github-actions]

Unit Test Results

  81 files    81 suites   4m 51s ⏱️
154 tests 154 ✔️ 0 💤 0 ❌
462 runs  462 ✔️ 0 💤 0 ❌

Results for commit 8835938.

♻️ This comment has been updated with latest results.