fix(core): normalize autoSelectFamily timeout AggregateError

[youcefzemmar]

What

In lib/core/connect.js, when the socket's error event fires with an AggregateError from net.connect's autoSelectFamily exhaustion, wrap it as a ConnectTimeoutError if any inner error (or the aggregate itself) carries code: 'ETIMEDOUT'. Message format matches the existing onConnectTimeout output (attempted addresses + timeout). Original aggregate preserved on .cause.

Why

The error reaching the dispatcher callback used to depend on which timer won the race:

• if undici's connectTimeout fired first → ConnectTimeoutError
• if Node's per-family attempt timer fired first → raw AggregateError

That ordering sensitivity is what #5092 reports. Single-error paths (e.g. one ECONNREFUSED) are untouched, so the connect-errconnect.js strict-equality assertion still holds.

Testing

• npx borp -p "test/connect-timeout.js" — green (new test included)
• npx borp -p "test/connect-errconnect.js" — green (single-error path unchanged)
• npx borp -p "test/node-test/autoselectfamily.js" — green
• eslint clean on changed files

test/connect-pre-shared-session.js fails with ERR_SSL_EE_KEY_TOO_SMALL on main too — pre-existing environment issue unrelated to this change.

Notes

Some callers may rely on receiving the raw AggregateError. The original is still accessible via error.cause, and the docs note this. Non-timeout aggregates (e.g. all ECONNREFUSED) are left untouched.

Fixes #5092.

[mcollina]

lgtm

[codecov-commenter]

Codecov Report

❌ Patch coverage is 92.59259% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.21%. Comparing base (f049730) to head (942c21e).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/core/connect.js	92.59%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5329   +/-   ##
=======================================
  Coverage   93.21%   93.21%           
=======================================
  Files         110      110           
  Lines       36598    36623   +25     
=======================================
+ Hits        34115    34139   +24     
- Misses       2483     2484    +1     

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