Adapt different stream data prefix, with or without space

[panzhongxian]

This is an alternative to another PR #932

Instead of compare header string, this PR use regex pattern to match and replace the header. It seems a more clear way to implement it.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.88%. Comparing base (774fc9d) to head (11cdb5a).
Report is 93 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #945      +/-   ##
==========================================
+ Coverage   98.46%   98.88%   +0.41%     
==========================================
  Files          24       27       +3     
  Lines        1364     1786     +422     
==========================================
+ Hits         1343     1766     +423     
+ Misses         15       14       -1     
  Partials        6        6              

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[panzhongxian]

@sashabaranov Sorry to disturb you. I can't reopen the old one PR #941 after rebasing and force pushing. So I create a new one.

[Copilot]

Pull Request Overview

This PR updates the stream header processing by switching from static byte comparisons to regex matching and replacement to better accommodate prefixes that may or may not have spaces.

• Replaced byte slice header strings with corresponding regex patterns.
• Updated the processLines method to use regex Match and ReplaceAll for header detection and removal.

[sashabaranov]

Thank you! Merging this one instead of #932 due to more comprehensible diff