Extend Throwable in the package's marker exception interface

[mbabker]

Just as advertised.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 79.33%. Comparing base (598fead) to head (860ce07). Report is 59 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2739   +/-   ##
=======================================
  Coverage   79.33%   79.33%           
=======================================
  Files         162      162           
  Lines        8506     8506           
=======================================
  Hits         6748     6748           
  Misses       1758     1758           

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[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[phansys]

Thanks @mbabker!