Add Unit tests for the `crowdin download sources --reviewed` case

[andrii-bodnar]

The new functionality was added In #471 PR without Unit tests covering it. It's a --reviewed parameter for the crowdin download sources command that allows downloading reviewed source files from the Source Text Review WF step in Crowdin Enterprise.

It would be great to add the Unit tests coverage for this case.

API methods that are used in this feature:

• Build Reviewed Source Files
• Check Reviewed Source Files Build Status
• Download Reviewed Source Files

Test - DownloadSourcesActionTest.java

[Genne23v]

Can I contribute to this?

[andrii-bodnar]

@Genne23v sure, thank you! Please let me know if you need any assistance with that

[andrii-bodnar]

HI @Genne23v, do you need any assistance here? Just wondering what the progress on this issue

[Genne23v]

Sorry that I had to follow up some of PRs for other repos. I will push something by tomorrow. Thanks for your reminding.