Fixes iterator helpers when interacting with other polyfills

[mhassan1]

This PR fixes iterator helpers when loaded alongside other polyfills (e.g. String.prototype.@@iterator). It is a follow-up to #76.

[romainmenke]

IE is still failing, but might also be a browserstack issue: https://github.com/mrhenry/polyfill-library/actions/runs/11454689367/job/31934817539
I've noticed that IE has more and more intermittent issues on browserstack.

[mhassan1]

IE is still failing, but might also be a browserstack issue: https://github.com/mrhenry/polyfill-library/actions/runs/11454689367/job/31934817539 I've noticed that IE has more and more intermittent issues on browserstack.

I can replicate that issue locally. When I look in BrowserStack, I see Browser could not be launched for the session. Here are some docs about that: https://www.browserstack.com/docs/automate/selenium/error-codes/browserstack-failed-to-start-browser. Maybe we should open a support ticket.

Any comments on this PR?

[mhassan1]

@romainmenke Please take a look, if you have some time.

[romainmenke]

Haven't had much time :/
I will review this in the coming days

[romainmenke]

Thank you. LGTM 👍

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Sorry it took a while to get to this :)