[Bug]: ReferenceError: module is not defined when using Rspack 1.5.6 with Rslib

[colinaaa]

Version

System:
    OS: Linux 5.15 veLinux GNU/Linux 2 (lyra) 2 (lyra)
    CPU: (64) x64 Intel(R) Xeon(R) Platinum 8457C
    Memory: 244.96 GB / 251.61 GB
    Container: Yes
    Shell: 5.2.15 - /bin/bash
  Binaries:
    Node: 24.6.0 - /run/user/1001/fnm_multishells/3028163_1758543342952/bin/node
    npm: 11.5.1 - /run/user/1001/fnm_multishells/3028163_1758543342952/bin/npm
    pnpm: 10.15.1 - /run/user/1001/fnm_multishells/3028163_1758543342952/bin/pnpm
  npmPackages:
    @rslib/core: ^0.13.3 => 0.13.3 (with @rspack/core overrides to 1.5.6)

Details

When having source code like this:

import module from 'node:module'

export function register(options) {
  if (!module.register) {
    /** code */
  }
  module.register(/** code */)
}

When building with Rslib (with @rspack/core v1.5.6), it would become

import node_module from 'node:module'

export function register(options) {
  if (!module.register) {
    /** code */
  }
  node_module.register(/** code */)
}

The module in the if is not renamed to node_module.

You may see an real world example at: https://github.com/lynx-family/lynx-stack/actions/runs/17916170863/job/50939912914

This issue does not exist when using @rspack/core v1.5.5.

Reproduce link

https://github.com/colinaaa-reproductions/rspack-repro-module-rename

Reproduce Steps

1. pnpm install
2. pnpm run build

You may see that only the output of Rslib is incorrect.

[fi3ework]

supposed to be fixed in 0.15.0.