refactor: migrate license not found to new router

[adamstankiewicz]

https://2u-internal.atlassian.net/browse/ENT-8671

Ensures the case covered by #1001 is also handled in the new router.

Refactored slightly to use ErrorPage (which involved extending it to accept optional imageSrc and spannedTitle props). Used proper <ul> for the unordered list.

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)
• Ensure English strings are marked for translation. See documentation for more details.

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 80.83%. Comparing base (fda042e) to head (dabf2cb).

Additional details and impacted files

@@                        Coverage Diff                         @@
##           feat/react-query-route-loaders    #1009      +/-   ##
==================================================================
+ Coverage                           80.69%   80.83%   +0.13%     
==================================================================
  Files                                 382      382              
  Lines                                7921     7930       +9     
  Branches                             1941     1948       +7     
==================================================================
+ Hits                                 6392     6410      +18     
+ Misses                               1466     1457       -9     
  Partials                               63       63              

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