fix: invoke CommandExecuted on async exception failures

src/Discord.Net.Commands/Info/CommandInfo.cs

@@ -272,6 +272,10 @@ namespace Discord.Commands
 
                 var wrappedEx = new CommandException(this, context, ex);
                 await Module.Service._cmdLogger.ErrorAsync(wrappedEx).ConfigureAwait(false);
+
+                var result = ExecuteResult.FromError(CommandError.Exception, ex.Message);
+                await Module.Service._commandExecutedEvent.InvokeAsync(this, context, result).ConfigureAwait(false);
+
                 if (Module.Service._throwOnError)
                 {
                     if (ex == originalEx)
@@ -280,7 +284,7 @@ namespace Discord.Commands
                         ExceptionDispatchInfo.Capture(ex).Throw();
                 }
 
-                return ExecuteResult.FromError(CommandError.Exception, ex.Message);
+                return result;
             }
             finally
             {