feat: Updated leaderboard data table to use new API endpoint.

[saleem-latif]

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)

Only if submitting a visual change

• Ensure to attach screenshots
• Ensure to have UX team confirm screenshots

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.60%. Comparing base (045eefb) to head (9ba101e).
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1319      +/-   ##
==========================================
- Coverage   85.65%   85.60%   -0.06%     
==========================================
  Files         576      575       -1     
  Lines       12704    12672      -32     
  Branches     2690     2691       +1     
==========================================
- Hits        10882    10848      -34     
- Misses       1761     1763       +2     
  Partials       61       61              

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