Auto trigger Post analytics refresh (#21930)

ref https://linear.app/ghost/issue/DES-1041/auto-refresh-post-analytics

At the moment have a Refresh button in Post analytics which requires
users manually clicking to see how data updates on the page. This PR is
about automatically trigger this "click" every [10 seconds] so that the
refresh happens without users having to click.

ghost/admin/app/components/posts/analytics.hbs

@@ -35,14 +35,6 @@
                     {{/let}}
                 </div>
                 <div style="display: flex; gap: 8px;">
-                    <GhTaskButton
-                        @buttonText="Refresh"
-                        @task={{this.fetchPostTask}}
-                        @showIcon={{true}}
-                        @idleIcon="reload"
-                        @successText="Refreshed"
-                        @class="gh-btn gh-btn-icon refresh"
-                        @successClass="gh-btn gh-btn-icon refresh" />
                     {{#unless this.post.emailOnly}}
                         <button type="button" class="gh-btn gh-btn-icon share" {{on "click" this.togglePublishFlowModal}}>
                             <span>{{svg-jar "share" title="Share post"}} Share</span>

ghost/admin/app/components/posts/analytics.js

@@ -3,7 +3,7 @@ import DeletePostModal from '../modals/delete-post';
 import PostSuccessModal from '../modal-post-success';
 import anime from 'animejs/lib/anime.es.js';
 import {action} from '@ember/object';
-import {didCancel, task} from 'ember-concurrency';
+import {didCancel, task, timeout} from 'ember-concurrency';
 import {inject as service} from '@ember/service';
 import {tracked} from '@glimmer/tracking';
 
@@ -19,6 +19,8 @@ const DISPLAY_OPTIONS = [{
     value: 'paid'
 }];
 
+const AUTO_REFRESH_RATE = 7500;
+
 export default class Analytics extends Component {
     @service ajax;
     @service ghostPaths;
@@ -51,6 +53,8 @@ export default class Analytics extends Component {
     constructor() {
         super(...arguments);
         this.checkPublishFlowModal();
+        this.fetchPostTask.perform();
+        this.autoRefreshTask.perform();
     }
 
     openPublishFlowModal() {
@@ -390,6 +394,13 @@ export default class Analytics extends Component {
         return true;
     }
 
+    @task
+    *autoRefreshTask() {
+        yield timeout(AUTO_REFRESH_RATE);
+        yield this.fetchPostTask.perform();
+        this.autoRefreshTask.perform();
+    }
+
     @action
     applyClasses(element) {
         if (!this.shouldAnimate ||