…ty (#1889)

Templates whose child compilation output is a CommonJS module (for
example Rspack's HtmlWebpackPlugin child compilation, which wraps the
evaluated template in `module.exports = ...`) were failing at evaluation
time with `ReferenceError: module is not defined` under Node.js 25+.

In 5.6.5 the VM context was switched away from a `...global` spread
because spreading `global` on Node 25 throws once `localStorage` is
touched without `--localstorage-file`. The replacement clone only
exposes the standard globals plus `require`, so any CommonJS-wrapped
source that assigned to `module.exports` hit the ReferenceError.

Provide a throwaway `module = { exports: {} }` pair (plus `exports`
aliasing it) in the sandbox so CommonJS-style outputs can evaluate
without assuming the host Node version populates them.

Refs: PR #1880, facebook/docusaurus#11545