refactor(rspack): improve dependency location

[shulaoda]

Summary

          LGTM. You could also replace name `RealDependencyRange` with `DependencyRange` and remove `ErrorSpan`. Both of them looks good to me.

Originally posted by @h-a-n-a in https://github.com/web-infra-dev/rspack/issues/7892#issuecomment-2360024987

Checklist

• [ ] Tests updated (or not required).
• [ ] Documentation updated (or not required).

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