Envvars ignored when using printHelpOnEmptyArgs

[Pyeroh]

When I create a CliktCommand with printHelpOnEmptyArgs set to true, with an option, if I launch my program without any option but with environment variables, they are not considered by the parser and the help message is printed.

Expected : if environment variables matching defined options exist, they should be considered to don't print the help message (as corresponding options can be filled)