fix(websocket): support process.unref

[mcollina]

Fixes #5570.

Adds Refable protocol support to WebSocket.

Tests: npm run test:websocket

[codecov-commenter]

Codecov Report

❌ Patch coverage is 90.90909% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.46%. Comparing base (f36ea9c) to head (80a8d5c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/web/websocket/websocket.js	90.90%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5578      +/-   ##
==========================================
- Coverage   93.47%   93.46%   -0.01%     
==========================================
  Files         110      110              
  Lines       37564    37586      +22     
==========================================
+ Hits        35114    35131      +17     
- Misses       2450     2455       +5     

☔ View full report in Codecov by Harness.
📢 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.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[KhafraDev]

😑