Add //go:build go1.23 constraint to skip compilation on Go 1.21/1.22 where runtime.(*Func).Name is not implemented in llgo, causing linker errors when internal/bisect is pulled in as a dependency. The demo works correctly on Go 1.23+ where the dependency chain or internal/bisect behavior avoids calling the unimplemented method. Fixes compatibility issue reported in PR review. 🤖 Generated with [codeagent](https://github.com/qbox/codeagent) Co-authored-by: luoliwoshang <luoliwoshang@users.noreply.github.com>