[scope-shadow.html]
[@scope can match :host]
expected: FAIL
[@scope can match :host(...)]
expected: FAIL
[:scope matches host via the scoping root]
expected: FAIL
[:scope within :is() matches host via the scoping root]
expected: FAIL
[Implicit @scope as direct child of shadow root]
expected: FAIL
[Implicit @scope in construted stylesheet]
expected: FAIL
[Matching :host via &, :scope (subject)]
expected: FAIL
[Matching :host via &, :scope (non-subject)]
expected: FAIL
[Matching :host via &, :scope (non-subject, >)]
expected: FAIL