fix merge error

Author: amerjusupovic

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/AzureAppConfigurationOptions.cs

@@ -25,6 +25,7 @@ public class AzureAppConfigurationOptions
         private const int MaxRetries = 2;
         private static readonly TimeSpan MaxRetryDelay = TimeSpan.FromMinutes(1);
         private static readonly TimeSpan NetworkTimeout = TimeSpan.FromSeconds(10);
+        private static readonly KeyValueSelector DefaultQuery = new KeyValueSelector { KeyFilter = KeyFilter.Any, LabelFilter = LabelFilter.Null };
 
         private List<KeyValueWatcher> _individualKvWatchers = new List<KeyValueWatcher>();
         private List<KeyValueWatcher> _ffWatchers = new List<KeyValueWatcher>();