Bash tool hangs with heredoc in chained command

Question

## Description

`Bash` tool hangs when using a heredoc inside a `&&`-chained command. The command never completes.

## Repro

This command hangs indefinitely:

```bash
git add file1 file2 && git commit -m "$(cat <<'EOF'
refactor: rename old_field_name

- Renamed to new_field_name for clarity
- Updated tests and docs
EOF
)"
```

## Workaround

Using multiple `-m` flags works fine:

```bash
git add file1 file2 && git commit -m "refactor: rename old_field_name" -m "- Renamed to new_field_name for c