Removing modified as default sort for EYB leads

[stuart-mindt]

Description of change

Removing modified as default sort for EYB leads as it should be created date

Checklist

• Has this branch been rebased on top of the current main branch?

  Explanation

  The branch should not be stale or have conflicts at the time reviews are requested.

• Is the CircleCI build passing?

General points

Other things to check

• Make sure fixtures/test_data.yaml is maintained when updating models
• Consider the admin site when making changes to models
• Use select-/prefetch-related field lists in views and search apps, and update them when fields are added
• Make sure the README is updated e.g. when adding new environment variables

See docs/CONTRIBUTING.md for more guidelines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.65%. Comparing base (a2b9325) to head (52e8340).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5954   +/-   ##
=======================================
  Coverage   96.65%   96.65%           
=======================================
  Files        1077     1077           
  Lines       25330    25330           
  Branches     1669     1669           
=======================================
  Hits        24482    24482           
  Misses        691      691           
  Partials      157      157           

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