Fix for not showing notifications opn android 14. Starting with andro…

…id 14 a pending mutable intent that does not specify a component or package will cause an exception. Switching to immutable intends for the CustomtabsIntent and declaring the package context for the mutable reply intent.

app/src/main/java/com/polar/nextcloudservices/Notification/Processors/spreed/NextcloudTalkProcessor.java

@@ -66,13 +66,14 @@ static private PendingIntent getReplyIntent(Context context,
         String[] link = rawNotification.getString("link").split("/"); // use provided link to extract talk chatroom id
         intent.putExtra("talk_chatroom", CommonUtil.cleanUpURLParams(link[link.length-1]));
         intent.putExtra("talk_link", CommonUtil.cleanUpURLParams(rawNotification.getString("link")));
+        intent.setPackage(context.getPackageName()); // Issue 78 --> https://developer.android.com/about/versions/14/behavior-changes-14?hl=en#safer-intents
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
             return PendingIntent.getBroadcast(
                     context,
                     notification_id,
                     intent,
-                    PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_UPDATE_CURRENT
+                    PendingIntent.FLAG_MUTABLE | PendingIntent.FLAG_UPDATE_CURRENT
             );
         }else{
             return PendingIntent.getBroadcast(