Sort by: Time to submit and Time to register does not work as expected

The following sort functionalities on the challenge listings page does not work as expected. My Challenges bucket: Time to Submit Open for registration bucket: Time to Submit, Time to Register

<img width="1440" alt="Screenshot 2020-08-06 at 12 52 37 PM" src="https://user-images.githubusercontent.com/58783823/89503400-1b5fcd00-d7e4-11ea-89c8-f0ac7bed221a.png"> <img width="1440" alt="Screenshot 2020-08-06 at 12 53 44 PM" src="https://user-images.githubusercontent.com/58783823/89503410-1e5abd80-d7e4-11ea-8c7e-622002e6ab67.png">

Final Submission Guidelines

Git issue link: https://github.com/topcoder-platform/community-app/issues/4715