refactor: #3538177 Remove jQuery UI _focusedElement and _focusTabbable from dialog Ajax

            if (!dialog.contains(document.activeElement)) {

              // Move focus to the first focusable element in the next event loop

              // to allow dialog buttons to be changed first.

              $(dialog).dialog('instance')._focusedElement = null;

              $(dialog).dialog('instance')._focusTabbable();

              // Replicate the autofocus behavior of jQuery UI Dialog.

              const autoFocusElement = dialog?.querySelector('[autofocus]');

              if (autoFocusElement) {

                autoFocusElement.focus();

                return;

              }

              const focusableElements = focusable(dialog);

              if (focusableElements.length > 0) {

                focusableElements[0].focus();

                return;

              }

              const dialogWrapper = dialog.closest('.ui-dialog');

              const buttonPane = dialogWrapper?.querySelector(

                '.ui-dialog-buttonpane',

              );

              const focusableButtons = focusable(buttonPane);

              if (focusableButtons.length > 0) {

                focusableButtons[0].focus();

                return;

              }

              const closeButton = dialogWrapper?.querySelector(

                '.ui-dialog-titlebar-close',

              );

              if (closeButton) {

                closeButton.focus();

                return;

              }

              dialog.focus();

            }

          }, 0);

        }