Show comments in the admin/instances page (#29240)

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/styles/mastodon/admin.scss

@@ -324,6 +324,23 @@ $content-width: 840px;
       padding-bottom: 0;
       margin-bottom: 0;
       border-bottom: 0;
+
+      .comment {
+        display: block;
+        overflow: hidden;
+        text-overflow: ellipsis;
+        margin-top: 4px;
+
+        &.private-comment {
+          display: block;
+          color: $darker-text-color;
+        }
+
+        &.public-comment {
+          display: block;
+          color: $secondary-text-color;
+        }
+      }
     }
 
     & > p {

app/views/admin/instances/_instance.html.haml

@@ -7,6 +7,10 @@
       %small
         - if instance.domain_block
           = instance.domain_block.policies.map { |policy| t(policy, scope: 'admin.instances.content_policies.policies') }.join(' · ')
+          - if instance.domain_block.public_comment.present?
+            %span.comment.public-comment #{t('admin.domain_blocks.public_comment')}: #{instance.domain_block.public_comment}
+          - if instance.domain_block.private_comment.present?
+            %span.comment.private-comment #{t('admin.domain_blocks.private_comment')}: #{instance.domain_block.private_comment}
         - elsif instance.domain_allow
           = t('admin.accounts.whitelisted')
         - else