Challenge Listings: Challenges not loading for subcommunities

Challenge Listings: Challenges not loading for sub communities User: TonyJ/appirio123 Example https://test-community-app.topcoder-dev.com/community/blockchain/challenges?communityId=blockchain <img width="1440" alt="Screenshot 2020-05-22 at 4 32 02 PM" src="https://user-images.githubusercontent.com/58783823/82661593-f37fb500-9c49-11ea-9c45-8a1c596a38b9.png"> <img width="1440" alt="Screenshot 2020-05-22 at 4 32 06 PM" src="https://user-images.githubusercontent.com/58783823/82661611-f9759600-9c49-11ea-85da-c68b6aedc049.png">

Final Submission Guidelines

Git issue link: https://github.com/topcoder-platform/community-app/issues/4393