LibWeb/CSS: Define writing-mode

[noahmbright]

Fill out the json and associated boilerplate for the writing-mode property, and fill out a FIXME in BlockFormattingContext.cpp

[AtkinsSJ]

Thanks for fixing the FIXME!

The getComputedStyle-print-all.html test fails on CI, probably someone else added a property since you last pulled master. Rebase, rebuild Ladybird, and then run that rebaseline script again to fix it.

Can we get a test for the FIXME change?

[noahmbright]

Can we get a test for the FIXME change?

Yeah absolutely. We might need to detour to #398 though first 😅 Even just trying to add a dummy test locally I get timeout issue. Is there another test I can try to model off of in this area of the code? With testing a box width and what not

[kalenikaliaksandr]

please separate into individual commit the change that introduces support for writing-mode property from the change in layout code.

[noahmbright]

Noticing that even though this passes CI, when I run the test suite locally /ladybird/Tests/LibWeb/Text/input/DOM/FormAssociatedElement-selection-type-change.html times out. It makes a call to getBoundingClientRect(); from an element object but I can't trace that back to the function I edited. Can anyone reproduce?

Edit, it passes now. Not sure what this might have been about