### 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
}
									break;
								default:
									ok = false;
									break;
							}
						}
					} break;
					default: {
						ok = false;
					}
				}
				if (mix_error) {
					_set_error(vformat(RTR("Cannot combine symbols from different sets in expression '.%s'."), ident));
					return nullptr;
				}
				if (!ok) {
					_set_error(vformat(RTR("Invalid member for '%s' expression: '.%s'."), (dt == TYPE_STRUCT ? st : get_datatype_name(dt)), ident));
					return nullptr;
				}
				MemberNode *mn = alloc_node<MemberNode>();
				mn->basetype = dt;
				mn->basetype_const = is_const;
				mn->datatype = member_type;
				mn->base_struct_name = st;
				mn->struct_name = member_struct_name;
				mn->array_size = array_size;
				mn->name = ident;
				mn->owner = expr;
				mn->has_swizzling_duplicates = repeated;