Cant create email to be sent to users with a role

Problem/Motivation

When first creating an email, the option to send the email to "Users with a role" results in an error message.

Steps to reproduce

Go to /admin/commerce/config/emails and click Add email. Enter the fields, and under the option "Send this email to", select "Users with a role", and choose any role. Click Save. An error message is shown saying that "Email field is required."

Proposed resolution

Dont do validation on the Email field when the "users with a role" is selected.

Workaround

When creating an email, set "Send this email to" to "Specific email address", and Enter any value as the email. Save the email. Then select Edit, and change "Send this email to" to "Users with a role". This time, when you save, no error is generated.