Make StartConfig listener creation context-aware

[EricGusmao]

Summary

• Create listeners with net.ListenConfig so StartConfig respects the provided context during listener setup
• Keep the existing serving behavior by defaulting ListenerNetwork to tcp and wrapping TLS listeners with
  tls.NewListener
• simplify the listener creation path by using the same flow for TLS and non-TLS listeners

Benefit

StartConfig.Start and StartConfig.StartTLS already accept a context, but listener creation previously used net.Listen
and tls.Listen, which do not use that context. This change makes listener setup context-aware without changing how the
server behaves after the listener is created.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.07%. Comparing base (22e4b71) to head (2da598d).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2936      +/-   ##
==========================================
- Coverage   93.07%   93.07%   -0.01%     
==========================================
  Files          43       43              
  Lines        4506     4503       -3     
==========================================
- Hits         4194     4191       -3     
  Misses        195      195              
  Partials      117      117              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[aldas]

LGTM