Some interop-2022-cascade tests cover too many things

[nt1m]

This one tests document.adoptedStylesheets which WebKit does not implement: https://wpt.fyi/results/css/css-cascade/layer-statement-before-import.html?label=master&label=experimental&product=chrome&product=firefox&product=safari&aligned&q=label%3Ainterop-2022-cascade

This one tests @property: https://wpt.fyi/results/css/css-cascade/layer-cssom-order-reverse.html?label=master&label=experimental&product=chrome&product=firefox&product=safari&aligned&q=label%3Ainterop-2022-cascade

Worth splitting or removing those tests from Interop 2022

[gsnedders]

see also #5

I think we basically just want to use assert_implements_optional for these?

[foolip]

@xiaochengh do you think these tests can be split (perhaps using variants) or use assert_implements_optional to avoid the hard dependency on these features?

[foolip]

Discussed in #77. General preference is that we split the tests if at all possible. Using assert_implements_optional would raise the question of what features are optional? Every other spec?

[xiaochengh]

Is there a list of tests we'd like to split, and a guideline how to split them?

[nt1m]

@xiaochengh See the first comment, essentially css/css-cascade/layer-statement-before-import.html and css/css-cascade/layer-cssom-order-reverse.html

[foolip]

The tests were split in web-platform-tests/wpt#34081. Thanks @xiaochengh!