### Godot version

v4.0.beta15.official [4fa6edc88]

### System information

Windows 10 (10.0.19045 Build 19045) | Forward+ | Vulkan API 1.3.206 | AMD Radeon RX 6800 XT

### Issue description

If there is a function with arguments within a `.gdshaderinc` file, then this function can not be used in other shaders that include this via a relative include. The error in the other shaders is "Too many arguments for "example()" call. Expected at most 0 but received 1". Using an absolute path for the include resolves the error.

**Note:** The relative include *does* work in the special case of both files being in the project root.

### Steps to reproduce

1. Put a shader and a shader-include file into a subdirectory
2. Write a function with arguments in the shader-include file
3. Include that file in the shader
4. Try to use the function

### Minimal reproduction project

[shader-include-bug.zip](https://github.com/godotengine/godot/files/10508745/shader-include-bug.zip)

return true;
}
void Shader::_update_shader() const {
}
Array Shader::_get_shader_uniform_list(bool p_get_groups) {
	List<PropertyInfo> uniform_list;
	get_shader_uniform_list(&uniform_list, p_get_groups);
	Array ret;
	for (const PropertyInfo &pi : uniform_list) {
		ret.push_back(pi.operator Dictionary());
	}
	return ret;
}
void Shader::_bind_methods() {
	ClassDB::bind_method(D_METHOD("get_mode"), &Shader::get_mode);
	ClassDB::bind_method(D_METHOD("set_code", "code"), &Shader::set_code);
	ClassDB::bind_method(D_METHOD("get_code"), &Shader::get_code);
	ClassDB::bind_method(D_METHOD("set_default_texture_parameter", "name", "texture", "index"), &Shader::set_default_texture_parameter, DEFVAL(0));
	ClassDB::bind_method(D_METHOD("get_default_texture_parameter", "name", "index"), &Shader::get_default_texture_parameter, DEFVAL(0));
	ClassDB::bind_method(D_METHOD("get_shader_uniform_list", "get_groups"), &Shader::_get_shader_uniform_list, DEFVAL(false));
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "code", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "set_code", "get_code");
	BIND_ENUM_CONSTANT(MODE_SPATIAL);
	BIND_ENUM_CONSTANT(MODE_CANVAS_ITEM);
	BIND_ENUM_CONSTANT(MODE_PARTICLES);
	BIND_ENUM_CONSTANT(MODE_SKY);
	BIND_ENUM_CONSTANT(MODE_FOG);
}
Shader::Shader() {