udp: hang on close after sending too large

[gdamore]

fixes #

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.92%. Comparing base (8880e07) to head (9c0b9d6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1970      +/-   ##
==========================================
+ Coverage   81.88%   81.92%   +0.03%     
==========================================
  Files          95       95              
  Lines       24065    24066       +1     
  Branches     3206     3206              
==========================================
+ Hits        19706    19715       +9     
+ Misses       4284     4280       -4     
+ Partials       75       71       -4     

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