How can I get the uploaded file path of a contact form in drupal 8


I’m using the hook_mail_alter() to create a custom email for contact forms.
I was able to get the fields labels and values and use a twig template to send the email. Most of it is working just fine, but my problem is when I use file fields on the contact form. I want to be able to show the path of the uploaded files. When I use the default drupal email, it shows the paths at the end of the file. I want to do the same thing at my custom email. Can anyone tell me how to do this?

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