Fix repository tests

[Tostti]

The repository contains tests that are automatically executed on every commit. Those tests are failing some time ago, and we need to see the cause and fix them.

Procedure

• Some of the errors came from snapshots that were not updated when the components were changed. The snapshots were correctly updated in the PR.
• Other test are based on the https://github.com/opensearch-project/opensearch-dashboards-functional-test/ repository. As we don't have control over that, tests that failed for that reason were disabled in our repository.
• Additionally, there were tests for systems that we don't currently support (Windows, macOS). Those tests were disabled to use less GitHub Actions time on each commit. If those systems are supported in the future, we can reenable them.