replaced mail_system by symfony mailer

config/sync/symfony_mailer.mailer_policy.contact.copy.yml

@@ -0,0 +1,17 @@
+uuid: 134147cd-f707-4a44-b578-fe47c9fddc7e
+langcode: en
+status: true
+dependencies:
+  module:
+    - contact
+_core:
+  default_config_hash: dRrc9PkLOme-LkddT28g1s2j6A6r8qJLW6I1FA4HD9M
+id: contact.copy
+configuration:
+  email_body:
+    content:
+      value: |-
+        <p class="contact-email-intro">Here is a copy of the message you sent to {{ recipient_name }} at {{ site_name }}.</p>
+        <hr>
+        {{ body }}
+      format: email_html