Update behaviour of HandleCommand_FailsWhenParameterTypesNotValid

Command dispatch now returns a different error code when dispatch fails due to an invalid parameter type

Tests/Runtime/DialogueRunnerTests/DialogueRunnerTests.cs

@@ -406,7 +406,7 @@ public void HandleCommand_FailsWhenParameterTypesNotValid(string command, string
  var regex = new Regex(error);
 
  var result = dispatcher.DispatchCommand(command, runner);
- Assert.AreEqual(CommandDispatchResult.StatusType.InvalidParameterCount, result.Status);
+ Assert.AreEqual(CommandDispatchResult.StatusType.InvalidParameter, result.Status);
  Assert.That(regex.IsMatch(result.Message));
  }