refactor(internal/build):remove rpath change

[luoliwoshang]

Based on our discussion in the meeting, the "rpath change mode" only accomplishes half of the publishing task. It is incomplete as it only modifies the library file's install_name to start with @rpath. For commands like llgo run . and llgo build ., implementing the full publishing workflow is too "heavy". Publishing should be treated as a separate solution, and therefore, this mode should be removed.

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• test at [wip] llgo:prerelease-testing with libwind-19-dev & libc++-19-dev Homebrew/homebrew-core#227010

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.80%. Comparing base (f0728c4) to head (e60c3bd).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1174      +/-   ##
==========================================
+ Coverage   87.71%   87.80%   +0.08%     
==========================================
  Files          29       29              
  Lines        7279     7272       -7     
==========================================
  Hits         6385     6385              
+ Misses        827      821       -6     
+ Partials       67       66       -1     

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