fixed bug that prevents sending messages if reply was triggered in a different chat

lib/api/marianumcloud/talk/talk_api.dart

@@ -6,8 +6,10 @@ import '../../api_params.dart';
 import '../../api_response.dart';
 import '../../errors/network_exception.dart';
 import '../../errors/parse_exception.dart';
+import '../../errors/talk_exception.dart';
 import '../../http_errors.dart';
 import '../nextcloud_ocs.dart';
+import 'talk_error.dart';
 
 abstract class TalkApi<T extends ApiResponse?> {
   String path;
@@ -49,6 +51,16 @@ abstract class TalkApi<T extends ApiResponse?> {
       // logs surface the cause instead of just the bare status code.
       final detail = httpErrorDetail('Talk $endpoint', data.body, status);
       log(detail);
+      // Talk's own codes need their own wording: a 400/412/413 here is a
+      // rejected request, not a struggling server, and "try again later"
+      // would send the user in circles. 401/403/404 keep the shared mapping
+      // so the auth handling stays in one place.
+      if (status == 400 || status == 412 || status == 413 || status == 429) {
+        throw TalkException(
+          TalkError('failure', status, ''),
+          technicalDetails: detail,
+        );
+      }
       throwForStatus(status, detail);
     }