fix(do-not-disturb): return empty schedule on 404 instead of error

modules/legacy/modules/device_management/lib/src/core/data/datasources/do_not_disturb_remote_datasource_impl.dart

@@ -1,3 +1,4 @@
+import 'package:dio/dio.dart';
 import 'package:sf_infrastructure/sf_infrastructure.dart';
 
 import '../../../features/do_not_disturb/domain/do_not_disturb_period.dart';
@@ -19,6 +20,14 @@ class DoNotDisturbRemoteDatasourceImpl implements DoNotDisturbRemoteDatasource {
       );
       final model = DoNotDisturbResponseDto.fromJson(response.data!);
       return _toEntity(model.item);
+    } on DioException catch (e) {
+      if (e.response?.statusCode == 404) {
+        return DoNotDisturbSchedule(
+          id: '',
+          deviceIdentificator: identificator,
+        );
+      }
+      throw Exception('Error fetching do not disturb schedule');
     } catch (_) {
       throw Exception('Error fetching do not disturb schedule');
     }