[MetricsAdvisor] Update api view (Azure#15820)

Author: kinelski

sdk/metricsadvisor/Azure.AI.MetricsAdvisor/api/Azure.AI.MetricsAdvisor.netstandard2.0.cs

@@ -752,7 +752,7 @@ public partial class GetMetricFeedbacksOptions
         public GetMetricFeedbacksOptions() { }
         public System.DateTimeOffset? EndTime { get { throw null; } set { } }
         public Azure.AI.MetricsAdvisor.Models.FeedbackType? FeedbackType { get { throw null; } set { } }
-        public Azure.AI.MetricsAdvisor.Models.DimensionKey Filter { get { throw null; } set { } }
+        public Azure.AI.MetricsAdvisor.Models.DimensionKey Filter { get { throw null; } }
         public int? SkipCount { get { throw null; } set { } }
         public System.DateTimeOffset? StartTime { get { throw null; } set { } }
         public Azure.AI.MetricsAdvisor.Models.FeedbackQueryTimeMode? TimeMode { get { throw null; } set { } }