refactor(http-request): bundle runtime dependencies

[laipz8200]

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Related Issue

Refs #66

Summary

• bundle the HTTP request node's runtime collaborators behind a module-local dependency helper
• keep the legacy constructor keywords working while rejecting mixed old and new dependency input
• keep the dependency helper off the package surface and update direct tests to exercise the internal path

Checklist

• This pull request links the issue it resolves or advances
• This pull request title follows Conventional Commits, and any breaking change is marked with !
• If CLA Assistant prompted me, I signed CLA.md in the pull request conversation