check if paths patterns are not empty

[szym1991]

Not null checker is not enough to check if paths patterns must be included to IssueFilter. It should also check if the value is non-empty.

Testing done

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- [x] Ensure that the pull request title represents the desired changelog entry
- [x] Please describe what you did
- [x] Link to relevant issues in GitHub or Jira
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- [X] Ensure you have provided tests - that demonstrates feature works or fixes the issue

[reda-alaoui]

Thank you 🙏