Update 3rdparty/tvm-ffi to 58875b993304

Upstream : https://github.com/apache/tvm-ffi.git
Branch   : main
New HEAD : 58875b99330487e3629778f00a02c2278e3ea851
Subject  : [CMAKE] Fix Cmake when building as subdir (#112)
Author   : Tianqi Chen <[email protected]>
Date     : 2025-10-13T19:19:38-04:00
Delta    : 29 commit(s) since 4fefeb0f5913
Compare  : apache/tvm-ffi@4fefeb0...58875b9

This commit updates the tvm-ffi submodule to the latest upstream HEAD.

Author: junrushao