WPT import https://crrev.com/c/1127477 introduced new failures in external/wpt/svg:

List of new failures:
external/wpt/svg/rendering/order/z-index.svg [ Failure ]

This import contains upstream changes from a204983bc0c6bc63ec0c2ca1b5e347583cd01b75 to 597d73806075a5576528ae1ed0409874b55ad0f6:
Merge pull request #11585 from ewilligers/transform-property-renders: https://github.com/web-platform-tests/wpt/commit/597d73806075a5576528ae1ed0409874b55ad0f6
Merge pull request #11583 from ewilligers/z-index-test: https://github.com/web-platform-tests/wpt/commit/2b9ac244538d91c069ae6aa9273c4298b749bf99
Change parsing order for scroll-snap-align to block/inline.: https://github.com/web-platform-tests/wpt/commit/0ffa5aaa7809a1957bdf260aaf55c16403fbf3fe
Add an API to query whether the window has seen a user gesture.: https://github.com/web-platform-tests/wpt/commit/dfca5197519caef6c189636b5d80b33e3424e91e
SVG: transform properties affect rendering: https://github.com/web-platform-tests/wpt/commit/8801bb51541eef9d48b02374cfb103e209ef443e [affecting this directory]
SVG: Test that z-index controls rendering order: https://github.com/web-platform-tests/wpt/commit/20b41a18e9d67688e1682a4ff5c7aed387b3884b [affecting this directory]