Fix broken button styles by disabling preflight

[tominon]

This fixes transparent buttons issue described in laravel/nova-issues#4838 which is also present in this package.

[faxblaster]

Hey @tominon! I'm not able to recreate this, so would you mind dropping a screenshot along with your nova-stripe version?

From reading the linked issue, it looks like that one is related to the davidpiesse/nova-toggle package, which I don't think we're using here. I could be missing something though.

[tominon]

Hey @faxblaster, I'm not using davidpiesse/nova-toggle package in my project, but facing exact the same issue with nova-stripe v2.0.3 and latest Nova version v4.15.2:

Steps to reproduce:

1. Register the NovaStripe tool in app/Providers/NovaServiceProvider@tools
2. Add action to custom resource and check the modal dialog:

    public function actions(NovaRequest $request)
    {
        return [
            new Actions\ExtendTeamTrial(),
        ];
    }

[faxblaster]

Thanks for the additional context, and the contribution! 👏 LGTM