[scss] `@scope` rule wrongly expects a parenthesis for multiple selectors

[Arecsu]

Does this issue occur when all extensions are disabled?: Yes

@scope (.prose-blog, .prose-standard)

This is a valid CSS/SCSS selector per spec. But VSCode doesn't like it!

• VS Code Version: 1.108.2 arm64
• OS Version: macOS Tahoe 26.2

Steps to Reproduce:

1. In a SCSS file, write @scope (.foo, .bar) { }
2. Error: ) expectedscss(css-rparentexpected) at , even though it is a valid selector

[Arecsu]

PR: microsoft/vscode-css-languageservice#474