Fix call response deserialization exception when Language value is an empty string

Author: sierpinskid

Packages/StreamVideo/Runtime/Core/InternalDTO/Responses/TranscriptionSettingsResponseInternalDTO.cs

@@ -24,7 +24,7 @@ internal partial class TranscriptionSettingsResponseInternalDTO
 
         [Newtonsoft.Json.JsonProperty("language", Required = Newtonsoft.Json.Required.Default)]
         [Newtonsoft.Json.JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
-        public TranscriptionSettingsResponseLanguageInternalEnum Language { get; set; } = default!;
+        public TranscriptionSettingsResponseLanguageInternalEnum? Language { get; set; } = default!;
 
         [Newtonsoft.Json.JsonProperty("mode", Required = Newtonsoft.Json.Required.Default)]
         [Newtonsoft.Json.JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]