preserveNewLinesBetweenPropertyValues option seems ignored by vscode extension

[fabien-michel]

Reproduce:
Have VS code with thisismanta.stylus-supremacy extension installed (v2.17.6)

Create two files in an empty folder:
./.vscode/settings.json

{
    "stylusSupremacy.preserveNewLinesBetweenPropertyValues": true
}

./test.stylus

.blop
    background: linear-gradient(to right, blue, red), 
                blue

Try to format the stylus file using the extension, you get:

.blop {
    background: linear-gradient(to right, blue, red), blue;
}

which is not expected, because of preserveNewLinesBetweenPropertyValues set to true.

It works as expected from command line :

$ stylus-supremacy --version
v2.17.5
$ stylus-supremacy format test.stylus --options .vscode/settings.json

Results:

.blop {
	background:
		linear-gradient(to right, blue, red),
		blue;
}