ld: warning: ignoring duplicate libraries: '-lm'

# ld: warning: ignoring duplicate libraries: '-lm'

## Environment

- Bazel: 9.1.1
- rules_go: (auto-resolved via Bzlmod, version unknown)
- OS: macOS (darwin_arm64)
- Toolchain: rules_go default Go SDK via Bzlmod
- Build mode: `CGO_ENABLED=1`

---

## Summary

After running `bazel clean`, subsequent `bazel build` / `bazel run` triggers a linker warning:

The warning appears during Go linking (`GoLink` step) when building targets using `rules_go`.

---

## Reproduction Steps

1. Clean Bazel output:
```bash
bazel clean

bazel run //xx/:app
```

Start by reproducing the issue with `bazel clean` followed by `bazel run //xx/:app` on macOS with `CGO_ENABLED=1`. Inspect the `GoLink` action and its linker inputs to determine where duplicate `-lm` flags are introduced. Done means the affected build and run targets complete without the duplicate-library warning.

Written by the indexing model from the issue text.