Description

Various unit tests exist for the CLI, but they are disabled at the moment because they were found flaky. They need to be revisited, and necessary updates (migrating to the Vitest set of APIs, resolving failed assertions, etc.) must be performed to be made part of the CI pipeline.

Also, #4095 introduced unit tests for the newly added functionality and migrated the test runner from Jest to Vitest, bringing in better ESM support.