Unable to run behat tests on a url that has been specified as an additional_hostname in ddev.

[jonnyhocks]

Hello,

Logging an issue here which we have discovered where its not possible to run behat tests using this addon where the base_url in the behat.yml config file is set to a url which is listed as an additional_hostname entry in the .ddev/config.yaml file.

Our scenario for doing this is because we have a website which uses domain-based localisation, and we added a behat specific url to the additional hostnames so that we can run behat tests on path-based localisation.

Steps to reproduce:

• Set up a vanilla ddev project
• add this repo's addon.
• configure basic behat (I followed the instructions here)
• Run the test and see that the tests run and pass.
• Add a new alternative url to additional_hostnames in .ddev/config.yaml
• Update behat.yml with the new url.
• Run tests and see error as below:

unknown error: net::ERR_CONNECTION_REFUSED
        (Session info: headless chrome=101.0.4951.41)
      Build info: version: '4.1.4', revision: '535d840ee2'
      System info: host: 'c951a4569d1f', ip: '192.168.155.2', os.name: 'Linux', os.arch: 'amd64', os.version: '6.5.7-orbstack-00109-gd8500ae6683d', java.version: '11.0.14'
      Driver info: driver.version: unknown (WebDriver\Exception\UnknownError)
      ```