Button - external not parsed correctly

[owlyowl]

Issue summary

When trying to use external in the Remix App Template with a Button the typing is correct and external is a boolean.

When rendering in the browser it renders the link but target isn't present and the url property still is.
<a data-polaris-unstyled="true" class="Polaris-Button Polaris-Button--primary" url="https://www.shopify.com/" href="https://www.shopify.com/"><span class="Polaris-Button__Content"><span class="Polaris-Button__Text">Hi!</span></span></a>

Expected behavior

Button should open URL in an external window and markup should render correctly

Actual behavior

Steps to reproduce the problem

1. Create a Button like so <Button variant="primary" url={myUrl} external>Hi!</Button>

Specifications

• Are you using the React components? (Y): Yes

@shopify/polaris: ^12.0.0 => 12.0.0
react: ^18.2.0 => 18.2.0
react-dom: ^18.2.0 => 18.2.0

[github-actions]

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[axis80]

This issue is still present in Polaris 13.9.3. Can this issue be reopened?