Refactor anon blocking to use request.js

app/javascript/retrospring/features/inbox/entry/blockAnon.ts

@@ -1,4 +1,4 @@
-import Rails from '@rails/ujs';
+import { post } from '@rails/request.js';
 
 import { showErrorNotification, showNotification } from "utilities/notifications";
 import I18n from "retrospring/i18n";
@@ -10,21 +10,22 @@ export function blockAnonEventHandler(event: Event): void {
       question: element.getAttribute('data-q-id'),
     };
 
-    Rails.ajax({
-        url: '/ajax/block_anon',
-        type: 'POST',
-        data: new URLSearchParams(data).toString(),
-        success: (data) => {
+    post('/ajax/block_anon', {
+      body: data,
+      contentType: 'application/json'
+    })
+      .then(async response => {
+        const data = await response.json;
+
         if (!data.success) return false;
         const inboxEntry: Node = element.closest('.inbox-entry');
 
         showNotification(data.message);
 
         (inboxEntry as HTMLElement).remove();
-        },
-        error: (data, status, xhr) => {
-            console.log(data, status, xhr);
+      })
+      .catch(err => {
+        console.log(err);
         showErrorNotification(I18n.translate('frontend.error.message'));        
-        }
       });
 }