fix(android): make sure scheduled time is shown in LocalNotifications (#2553)

Author: naranjamecanica

android/capacitor/src/main/java/com/getcapacitor/plugin/notification/LocalNotificationManager.java

@@ -174,6 +174,12 @@ private void buildNotification(NotificationManagerCompat notificationManager, Lo
       mBuilder.setGroup(group);
     }
 
+    // make sure scheduled time is shown instead of display time
+    if (localNotification.isScheduled()) {
+      mBuilder.setWhen(localNotification.getSchedule().getAt().getTime())
+        .setShowWhen(true);
+    }
+
     mBuilder.setVisibility(Notification.VISIBILITY_PRIVATE);
     mBuilder.setOnlyAlertOnce(true);