### 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
if ((var.stage != ShaderNode::Varying::STAGE_FRAGMENT && var.stage != ShaderNode::Varying::STAGE_FRAGMENT_TO_LIGHT) && var.type < TYPE_FLOAT && var.interpolation != INTERPOLATION_FLAT) {
							_set_tkpos(var.tkpos);
							_set_error(RTR("Varying with integer data type must be declared with `flat` interpolation qualifier."));
							return nullptr;
						}
					}
					if (ident_type == IDENTIFIER_FUNCTION) {
						_set_error(vformat(RTR("Can't use function as identifier: '%s'."), String(identifier)));
						return nullptr;
					}
					if (is_const) {
						last_type = IDENTIFIER_CONSTANT;
					} else {
						last_type = ident_type;
					}
					is_local = ident_type == IDENTIFIER_LOCAL_VAR || ident_type == IDENTIFIER_FUNCTION_ARGUMENT;
				}
				Node *index_expression = nullptr;
				Node *call_expression = nullptr;
				Node *assign_expression = nullptr;
				if (array_size > 0) {
					prepos = _get_tkpos();
					tk = _get_token();
					if (tk.type == TK_OP_ASSIGN) {
						if (is_const) {
							_set_error(RTR("Constants cannot be modified."));
							return nullptr;
						}
						assign_expression = _parse_array_constructor(p_block, p_function_info, data_type, struct_name, array_size);
						if (!assign_expression) {