feat: Add role="dialog" in modals via JavaScript

Author: mrholek

js/src/modal.js

@@ -252,6 +252,7 @@ class Modal {
     this._element.style.display = 'block'
     this._element.removeAttribute('aria-hidden')
     this._element.setAttribute('aria-modal', true)
+    this._element.setAttribute('role', 'dialog')
     this._element.scrollTop = 0
 
     if (modalBody) {
@@ -327,6 +328,7 @@ class Modal {
     this._element.style.display = 'none'
     this._element.setAttribute('aria-hidden', true)
     this._element.removeAttribute('aria-modal')
+    this._element.removeAttribute('role')
     this._isTransitioning = false
     this._showBackdrop(() => {
       document.body.classList.remove(CLASS_NAME_OPEN)