P2 people invite links unit test

[develric]

Fixes #13456

This PR adds unit testing for 13456 issue introduced components.

To test

• Check the unit tests pass
• I needed to add RoleUtilsWrapper.kt and SimpleDateFormatWrapper.kt to make it testable. Would be good to make some smoke testing just in case 😄

PR submission checklist:

• I have considered adding unit tests where possible.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[peril-wordpress-mobile]

You can trigger optional UI/connected tests for these changes by visiting CircleCI here.

[peril-wordpress-mobile]

	Warnings
⚠️	PR has more than 500 lines of code changing. Consider splitting into smaller PRs if possible.

Generated by 🚫 dangerJS

[peril-wordpress-mobile]

You can test the changes on this Pull Request by downloading the APK here.

[khaykov]

Thank you for adding test, @develric ! Looks good, and I smoked test the functionality to make sure it works.