Migrate translation-proxy-broke-pool MG to Integration Test

[plebhash]

close #1414

---

note: ideally, Sniffer should have a primitive to assert a connection was broken... but that is currently blocked by #1389 so we bypassed that by asserting that a port is free inside the test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 18.27%. Comparing base (bec1d3e) to head (72c7710).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1415      +/-   ##
==========================================
- Coverage   18.28%   18.27%   -0.02%     
==========================================
  Files         127      127              
  Lines        9738     9738              
==========================================
- Hits         1781     1780       -1     
- Misses       7957     7958       +1     

Flag	Coverage Δ
binary_codec_sv2-coverage	0.00% <ø> (ø)
binary_sv2-coverage	6.95% <ø> (ø)
bip32_derivation-coverage	0.00% <ø> (ø)
buffer_sv2-coverage	24.88% <ø> (ø)
codec_sv2-coverage	0.02% <ø> (ø)
common_messages_sv2-coverage	0.17% <ø> (ø)
const_sv2-coverage	0.00% <ø> (ø)
error_handling-coverage	0.00% <ø> (ø)
framing_sv2-coverage	0.37% <ø> (ø)
jd_client-coverage	0.42% <ø> (ø)
jd_server-coverage	12.98% <ø> (ø)
job_declaration_sv2-coverage	0.00% <ø> (ø)
key-utils-coverage	2.38% <ø> (ø)
mining-coverage	3.15% <ø> (-0.03%)	⬇️
mining_device-coverage	0.00% <ø> (ø)
mining_proxy_sv2-coverage	0.82% <ø> (ø)
noise_sv2-coverage	5.78% <ø> (ø)
protocols	23.89% <ø> (-0.02%)	⬇️
roles	7.71% <ø> (ø)
roles_logic_sv2-coverage	11.62% <ø> (ø)
sv2_ffi-coverage	0.00% <ø> (ø)
template_distribution_sv2-coverage	0.00% <ø> (ø)
translator_sv2-coverage	9.53% <ø> (ø)
utils	25.04% <ø> (ø)
v1-coverage	3.11% <ø> (ø)

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[jbesraa]

LGTM