Use bundlerUrl to retrieve chain id

[itsdeka]

#1152

[github-actions]

CLA Assistant Lite bot:
Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request}

[yagopv]

Hi! thanks for the PR.

If this works for you I think the quickest option is to create your own estimator. You can easy update the PimlicoFeeEstimator for your needs and use it in the createTransaction method. Anyway i will check this with the team

createTransaction({ transactions, options: { feeEstimator: new CustomEstimator() } })