UMovieGraphSettingNode::GetFormatResolveArgs

This is called either on the CDO, or on a "flattened" instance of the node every frame when generating filename/file metadata, allowing the node to add custom key-value pairs ([FString](API\Runtime\Core\FString), [FString](API\Runtime\Core\FString)) to be used as {format_tokens} in filenames, or to be included in File metadata.