net: fix SocketAddress.parse default port handling

[araujogui]

Fixes #62906

[Copilot]

Pull request overview

This PR fixes net.SocketAddress.parse() so it correctly preserves explicit default ports (notably :80) that are otherwise dropped by URL.parse() when using an http:// base, aligning behavior with expectations and documentation.

Changes:

• Update SocketAddress.parse() to derive the port from the raw input string rather than url.port.
• Simplify the parse return path to a single SocketAddress construction for both IPv4 and IPv6.
• Add regression tests covering IPv4/IPv6 with explicit ports 80 and 443.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
lib/internal/socketaddress.js	Fixes default-port handling by parsing the port from the raw input instead of URLParse(...).port.
test/parallel/test-socketaddress.js	Adds regression coverage ensuring explicit :80/:443 are preserved for both IPv4 and IPv6.

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[codecov]

Codecov Report

❌ Patch coverage is 93.75000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 89.63%. Comparing base (1178926) to head (b274a64).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/internal/socketaddress.js	93.75%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62912      +/-   ##
==========================================
+ Coverage   89.62%   89.63%   +0.01%     
==========================================
  Files         706      706              
  Lines      219203   219208       +5     
  Branches    41996    42003       +7     
==========================================
+ Hits       196454   196486      +32     
+ Misses      14658    14615      -43     
- Partials     8091     8107      +16     

Files with missing lines	Coverage Δ
lib/internal/socketaddress.js	98.51% <93.75%> (-0.47%)	⬇️

... and 30 files with indirect coverage changes

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