Fix admin interface showing superfluous reject media/reports on suspended blocks (#11749)

* Fix admin interface showing superfluous reject media/reports on suspended domains

* Fix reject media/reports checkboxes being visible when editing domain block of suspend severity

app/javascript/packs/admin.js

 import { delegate } from 'rails-ujs';
+import ready from '../mastodon/ready';
 
 const batchCheckboxClassName = '.batch-checkbox input[type="checkbox"]';
 
@@ -29,7 +30,7 @@ delegate(document, '.media-spoiler-hide-button', 'click', () => {
   });
 });
 
-delegate(document, '#domain_block_severity', 'change', ({ target }) => {
+const onDomainBlockSeverityChange = (target) => {
   const rejectMediaDiv   = document.querySelector('.input.with_label.domain_block_reject_media');
   const rejectReportsDiv = document.querySelector('.input.with_label.domain_block_reject_reports');
 
@@ -40,4 +41,11 @@ delegate(document, '#domain_block_severity', 'change', ({ target }) => {
   if (rejectReportsDiv) {
     rejectReportsDiv.style.display = (target.value === 'suspend') ? 'none' : 'block';
   }
+};
+
+delegate(document, '#domain_block_severity', 'change', ({ target }) => onDomainBlockSeverityChange(target));
+
+ready(() => {
+  const input = document.getElementById('domain_block_severity');
+  if (input) onDomainBlockSeverityChange(input);
 });

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

@@ -44,15 +44,16 @@
             - if !instance.domain_block.noop?
               = t("admin.domain_blocks.severity.#{instance.domain_block.severity}")
               - first_item = false
-            - if instance.domain_block.reject_media?
-              - unless first_item
-                •
-              = t('admin.domain_blocks.rejecting_media')
-              - first_item = false
-            - if instance.domain_block.reject_reports?
-              - unless first_item
-                •
-              = t('admin.domain_blocks.rejecting_reports')
+            - unless instance.domain_block.suspend?
+              - if instance.domain_block.reject_media?
+                - unless first_item
+                  •
+                = t('admin.domain_blocks.rejecting_media')
+                - first_item = false
+              - if instance.domain_block.reject_reports?
+                - unless first_item
+                  •
+                = t('admin.domain_blocks.rejecting_reports')
           - elsif whitelist_mode?
             = t('admin.accounts.whitelisted')
           - else