[64472] Focus should return to trigger element on closing attribute help text dialog (#19494)

* Fix focus loss when opening and closing async dialog with keyboard

* move methods to the connect and clean code

frontend/src/stimulus/controllers/async-dialog.controller.ts

@@ -34,13 +34,20 @@ import { TurboHelpers } from '../../turbo/helpers';
 
 export default class AsyncDialogController extends ApplicationController {
   connect() {
-    this.element.addEventListener('click', (e) => {
-      e.preventDefault();
+    this.element.addEventListener('click', (event:MouseEvent) => {
+      event.preventDefault();
       this.triggerTurboStream();
     });
+
+    this.element.addEventListener('keydown', (event:KeyboardEvent) => {
+      if (event.key === 'Enter' || event.key === ' ') {
+        event.preventDefault();
+        this.triggerTurboStream();
+      }
+    });
   }
 
-  triggerTurboStream():void {
+  private triggerTurboStream():void {
     TurboHelpers.showProgressBar();
 
     void fetch(this.href, {