fix: Permissions v2 Invalid Operation Exception (#2267)

* implement fix

* implement fix

src/Discord.Net.Rest/Entities/Interactions/RestApplicationCommand.cs

@@ -65,8 +65,7 @@ namespace Discord.Rest
                 : ImmutableArray.Create<RestApplicationCommandOption>();
 
             IsEnabledInDm = model.DmPermission.GetValueOrDefault(true).GetValueOrDefault(true);
-            DefaultMemberPermissions = model.DefaultMemberPermission.IsSpecified
-                ? new GuildPermissions((ulong)model.DefaultMemberPermission.Value) : GuildPermissions.None;
+            DefaultMemberPermissions = new GuildPermissions((ulong)model.DefaultMemberPermission.GetValueOrDefault(0).GetValueOrDefault(0));
         }
 
         /// <inheritdoc/>

src/Discord.Net.WebSocket/Entities/Interaction/SocketBaseCommand/SocketApplicationCommand.cs

@@ -94,8 +94,7 @@ namespace Discord.WebSocket
                 : ImmutableArray.Create<SocketApplicationCommandOption>();
 
             IsEnabledInDm = model.DmPermission.GetValueOrDefault(true).GetValueOrDefault(true);
-            DefaultMemberPermissions = model.DefaultMemberPermission.IsSpecified
-                ? new GuildPermissions((ulong)model.DefaultMemberPermission.Value) : GuildPermissions.None;
+            DefaultMemberPermissions = new GuildPermissions((ulong)model.DefaultMemberPermission.GetValueOrDefault(0).GetValueOrDefault(0));
         }
 
         /// <inheritdoc/>