Fix numeric type check for options

src/Discord.Net.Core/Entities/Interactions/ApplicationCommandOptionChoice.cs

@@ -34,8 +34,8 @@ namespace Discord
             get => _value;
             set
             {
-                if (value != null && value is not int && value is not string)
-                    throw new ArgumentException("The value of a choice must be a string or int!");
+                if (value != null && value is not string && !value.IsNumericType())
+                    throw new ArgumentException("The value of a choice must be a string or a numeric type!");
                 _value = value;
             }
         }

src/Discord.Net.Core/Extensions/ObjectExtensions.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Discord
+{
+    internal static class ObjectExtensions
+    {
+        public static bool IsNumericType(this object o)
+        {
+            switch (Type.GetTypeCode(o.GetType()))
+            {
+                case TypeCode.Byte:
+                case TypeCode.SByte:
+                case TypeCode.UInt16:
+                case TypeCode.UInt32:
+                case TypeCode.UInt64:
+                case TypeCode.Int16:
+                case TypeCode.Int32:
+                case TypeCode.Int64:
+                case TypeCode.Decimal:
+                case TypeCode.Double:
+                case TypeCode.Single:
+                    return true;
+                default:
+                    return false;
+            }
+        }
+    }
+}