More appropriate fallback error message from lang system

Author: iMattPro

styles/all/template/event/notification_dropdown_footer_after.html

@@ -1,7 +1,7 @@
 {% if NOTIFICATIONS_WEBPUSH_ENABLE and notification_types is not defined %}
 	<div class="wpn-notification-dropdown-footer" title="{{ lang('NOTIFY_WEBPUSH_DROPDOWN_TITLE') }}">
 		<span class="ellipsis-text">{{ lang('NOTIFY_WEBPUSH_ENABLE_SLIDER') ~ lang('COLON') }}</span>
-		<button id="subscribe_webpush" name="subscribe_webpush" data-l-err="{{ lang('INFORMATION') }}" data-l-msg="{{ lang('NOTIFY_WEBPUSH_DENIED') }}">
+		<button id="subscribe_webpush" name="subscribe_webpush" data-l-err="{{ lang('INFORMATION') }}" data-l-msg="{{ lang('NOTIFY_WEBPUSH_DENIED') }}" data-disabled-msg="{{ lang('NOTIFY_WEBPUSH_DISABLED') }}">
 			<i class="icon fa-toggle-off fa-fw icon-lightgray" aria-hidden="true" title="{{ lang('NOTIFY_WEBPUSH_SUBSCRIBE') }}"><span class="sr-only">{{ lang('NOTIFY_WEBPUSH_SUBSCRIBE') }}</span></i>
 		</button>
 		<button id="unsubscribe_webpush" name="unsubscribe_webpush" class="hidden">

styles/all/template/webpush.js

@@ -280,7 +280,7 @@ function PhpbbWebpush() {
 				});
 		} catch (error) {
 			console.error('Push subscription error:', error);
-			phpbb.alert(subscribeButton.getAttribute('data-l-err'), subscribeButton.getAttribute('data-l-msg'));
+			phpbb.alert(subscribeButton.getAttribute('data-l-err'), error.message || subscribeButton.getAttribute('data-disabled-msg'));
 		}
 	}