Sort by Prize missing on challenge listing

[ajefts]

Describe the bug
On the challenge listing page, when viewing "All Challenges" the sort by prize is not available in the sort dropdown.

To Reproduce
Steps to reproduce the behavior:

1. Go to www.topcoder.com/challenges
2. Click on All Challenges in the left nav
3. Click Sort By in the upper right
4. Note that there is no option to sort by prize. This option IS available if I'm filtered on "Open for Registration"

Expected behavior
Sort by prize should be available all the time.

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

[ajefts]

fyi @Oanh-and-only-Oanh