🧪 [testing improvement] Add test for std.svg module registration

[Tcode-Motion]

🎯 What: Added a missing unit test for the register_svg function in stdlib/src/svg.rs.
📊 Coverage: Tests that the std.svg module is correctly registered in the standard library registry with the correct name ("std.svg"), version ("1.0.0"), empty exports, and empty required capabilities.
✨ Result: Improved test coverage for the stdlib module registration process.

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PR created automatically by Jules for task 15072172301089066365 started by @Tcode-Motion

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