### 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
member_type = TYPE_UINT;
									break;
								case TYPE_MAT4:
									member_type = TYPE_VEC4;
									break;
								default:
									break;
							}
							break;
						default: {
							_set_error(vformat(RTR("An object of type '%s' can't be indexed."), (expr->get_datatype() == TYPE_STRUCT ? expr->get_datatype_name() : get_datatype_name(expr->get_datatype()))));
							return nullptr;
						}
					}
				}
				OperatorNode *op = alloc_node<OperatorNode>();
				op->op = OP_INDEX;
				op->return_cache = member_type;
				op->struct_name = member_struct_name;
				op->arguments.push_back(expr);
				op->arguments.push_back(index);
				expr = op;
				tk = _get_token();
				if (tk.type != TK_BRACKET_CLOSE) {
					_set_expected_error("]");
					return nullptr;
				}
			} else if (tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) {
				OperatorNode *op = alloc_node<OperatorNode>();
				op->op = tk.type == TK_OP_DECREMENT ? OP_POST_DECREMENT : OP_POST_INCREMENT;