### 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
type2 = TYPE_STRUCT;
										struct_name2 = tk.text;
									} else {
										if (!is_token_variable_datatype(tk.type)) {
											_set_error(RTR("Invalid data type for the array."));
											return ERR_PARSE_ERROR;
										}
										type2 = get_token_datatype(tk.type);
									}
									int array_size2 = 0;
									tk = _get_token();
									if (tk.type == TK_BRACKET_OPEN) {
										bool is_unknown_size = false;
										Error error = _parse_array_size(nullptr, constants, false, nullptr, &array_size2, &is_unknown_size);
										if (error != OK) {
											return error;
										}
										if (is_unknown_size) {
											array_size2 = constant.array_size;
										}
										tk = _get_token();
									} else {
										_set_expected_error("[");
										return ERR_PARSE_ERROR;
									}
									if (constant.precision != precision2 || constant.type != type2 || struct_name != struct_name2 || constant.array_size != array_size2) {
										String from;
										if (type2 == TYPE_STRUCT) {
											from += struct_name2;
										} else {