### Godot version

v4.0.beta13.official [caacade56]

### System information

Linux Ubuntu 20.04 with Unity desktop

### Issue description

When calling an undefined function in the shader editor with argument(s), such as `undefined_function(1)`, the error reads:

> Too many arguments for "undefined_function()" call. Expected at most 0 but received 1.

instead of the expected:

> No matching function found for: 'undefined_function'.

This is possibly a regression introduced in https://github.com/godotengine/godot/issues/18225, since the latter was focused on the arguments part.

To avoid such regression in the future, consider adding a unit test with this case (and, in fact, unit tests for the other signature errors too if there are not already).

### Steps to reproduce

1. Create a shader resource and open the shader editor
2. Enter `undefined_function(1);` in the fragment() definition

### Minimal reproduction project

N/A
DataType type = TYPE_VOID;
	String struct_name = "";
	int array_size = 0;
	bool auto_size = false;
	TkPos prev_pos = _get_tkpos();
	Token tk = _get_token();
	if (tk.type == TK_CURLY_BRACKET_OPEN) {
		auto_size = true;
	} else {
		if (shader->structs.has(tk.text)) {
			type = TYPE_STRUCT;
			struct_name = tk.text;
		} else {
			if (!is_token_variable_datatype(tk.type)) {
				_set_tkpos(prev_pos);
				Node *n = _parse_and_reduce_expression(p_block, p_function_info);