Jetpack: CSS Tidy: add clip-path

[kristarella]

According to MDN the clip property has been deprecated for clip-path, but we don't support clip-path in custom CSS.

Can we please add this property to the allowed CSS?

related ticket 3294186-zen

[pauljacobson]

@jeherve Is this an involved change to make? I needed to use Custom CSS with this property to overcome an issue in the block editor for a user where the rendered page didn't circle crop images correctly.

I'm sure the team has about a billion tasks, but adding this property could be a huge benefit for HEs trying to work around what seems to be a block editor styling issue.

[jeherve]

Is this an involved change to make?

I can't really say for sure without testing, but it should be as straightforward as adding the new property to the list of properties we support. #15044 is a good example of how that's done.

[pauljacobson]

Thanks @jeherve. If it would help, I can try my hand at submitting a PR (if I can figure out which file to work on)?