chore: 🤖 dialog must have aria-describedby for header

addons/rose/addon/components/rose/dialog/index.hbs

@@ -5,10 +5,15 @@
     ...attributes
     role="dialog"
     class="rose-dialog {{if  @style (concat "rose-dialog-" @style)}} {{if @modal 'modal'}}"
+    id={{this.id}}
+    aria-describedby={{concat "dialog-header-" this.id}}
     {{focus-trap}}
   >
 
-    <header class="rose-dialog-header">
+    <header
+      class="rose-dialog-header"
+      id={{concat "dialog-header-" this.id}}
+    >
 
       {{#if @icon}}
         <Rose::Icon @name={{@icon}} @size="medium" />

addons/rose/addon/components/rose/dialog/index.js

@@ -1,8 +1,16 @@
 import Component from '@glimmer/component';
+import { generateComponentID } from '../../../utilities/component-auto-id';
 import { action } from '@ember/object';
 
 export default class RoseDialogComponent extends Component {
 
+  // =attributes
+
+  /**
+   * @type {string}
+   */
+  id = generateComponentID();
+
   // =methods
 
   /**