dgram: support blocklist in udp

[theanarkh]

• [x] make -j4 test (UNIX), or vcbuild test (Windows) passes
• [x] tests and/or benchmarks are included
• [x] documentation is changed or added
• [x] commit message follows commit guidelines

[nodejs-github-bot]

Review requested:

• [ ] @nodejs/net

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 83.33333% with 6 lines in your changes missing coverage. Please review.

Project coverage is 88.00%. Comparing base (4211ab5) to head (8e6556f). Report is 91 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/dgram.js	83.33%	6 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #56087      +/-   ##
==========================================
- Coverage   88.00%   88.00%   -0.01%     
==========================================
  Files         656      656              
  Lines      189103   189138      +35     
  Branches    35999    36016      +17     
==========================================
+ Hits       166421   166444      +23     
+ Misses      15860    15854       -6     
- Partials     6822     6840      +18     

Files with missing lines	Coverage Δ
lib/dgram.js	97.61% <83.33%> (+0.25%)	:arrow_up:

... and 23 files with indirect coverage changes

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/64045/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/64051/

[nodejs-github-bot]

Landed in a50f3d5d8a0470dde057f8ba283a10ce57993d38