`@@toStringTag` property not present on modules passed to `hookFn`

Expected Behavior

Using Hook, the module passed to hookFn includes @@toStringTag property as was the case up until import-in-the-middle@1.7.1

Actual Behavior

Using Hook, the module passed to hookFn does not include the @@toStringTag property.

Steps to Reproduce the Problem

npm init
npm install --save-exact koa@2.15.0 (used as an example)
npm install --save-exact import-in-the-middle@1.7.3

create index.mjs


// index.mjs
import Hook from 'import-in-the-middle'
import * as koa from 'koa';

Hook(['koa'], (exported, name, baseDir) => { // Expect "Module" if(exported[Symbol.toStringTag] !== "Module"){ throw new Error('Expected module') } })

console.log('Everything as expected');

 5. `node --loader=import-in-the-middle/hook.mjs index.mjs` **This fails**

However, doing the same with `import-in-the-middle@1.7.1` works as expected:

 7. `npm install --save-exact import-in-the-middle@1.7.1`
 8. `node --loader=import-in-the-middle/hook.mjs index.mjs` **This succeeds**

## Additional info

I'm not certain that this is safe, but adding this to the generated code in `hook.js` after [L312](https://github.com/DataDog/import-in-the-middle/blob/c3c2c52c1915b47994af59d507c59029c1f1fae9/hook.js#L312) includes the property from the primary namespace and seems to fix the issue.

for (const k of Object.getOwnPropertySymbols(primary)) { _[k] = primary[k] }



## Specifications

  - Version: Node.js v18.19.0
  - Platform: Ubuntu 22.04

nodejs / import-in-the-middle