Remove JSON naming policy formatting from ValidatableParameterInfo

Co-authored-by: captainsafia <[email protected]>

Author: Copilot

src/Http/Http.Abstractions/src/Validation/ValidatableParameterInfo.cs

@@ -66,14 +66,7 @@ public virtual async Task ValidateAsync(object? value, ValidateContext context,
         }
 
         context.ValidationContext.DisplayName = DisplayName;
-        
-        // Format member name according to naming policy if available
-        var memberName = Name;
-        if (context.SerializerOptions?.PropertyNamingPolicy is not null)
-        {
-            memberName = context.SerializerOptions.PropertyNamingPolicy.ConvertName(Name);
-        }
-        context.ValidationContext.MemberName = memberName;
+        context.ValidationContext.MemberName = Name;
 
         var validationAttributes = GetValidationAttributes();