Automatically remove Examples section of pull request template when this repo is used to create a new repo

[mcmire]

I found this article which uses a GitHub workflow to set up a repo created from a template. The workflow will run when the repo is first created, force-push to itself to clear the version generated by GitHub, then delete the workflow. This would be handy to automatically remove the Examples section of the pull request template, a step that is often forgotten: MetaMask/core#1162. Taking things a step further, we could also use it to actually write a new pull request template on creation as per MetaMask/core#1162. That way this module template would have a version of the pull request template specific to it and any newly created repos would have their own version, minimizing confusion when submitting new pull requests to this repo specifically.