🧹 Fix unnecessary clone in render_html web module

[Tcode-Motion]

🎯 What: Removed an unnecessary .clone() operation on a vector inside the render_html function in stdlib/src/web.rs.
💡 Why: Cloning an entire Vec inside a standard library function wastes memory and CPU time (O(N) operation). By modifying the loop to borrow and iterate over a reference (&*items.borrow()), we avoid the allocation while maintaining memory safety through Rust's temporary lifetime extensions in for loops.
✅ Verification: Verified that tests pass via cargo test --workspace and visually confirmed code modification. Code review also approved the change as safe and idiomatic.
✨ Result: Improved performance and memory efficiency of render_html without altering its behavior.

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PR created automatically by Jules for task 9391340937444937559 started by @Tcode-Motion

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