Extend test coverage from "LayoutTests/svg/[W3C-SVG-1.1 | z-index | compositing]" to all of "LayoutTests/svg"

[nikolaszimmermann]

This should test all svg/ tests:

cd /path/to/WebKit/checkout
run-webkit-tests --no-build --additional-platform-directory=$PWD/LayoutTests/platform/mac-monterey-wk2-lbse-text --additional-platform-directory=$PWD/LayoutTests/platform/mac-monterey-wk2-pixel --additional-expectations=$PWD/LayoutTests/platform/mac-monterey-wk2-lbse-text/TestExpectations --pixel-tests --tolerance=0 --internal-feature=LayerBasedSVGEngineEnabled=true svg

Tasks:

• [x] Finish patch
• [x] Create PR
• [x] Land PR

Upstreaming:

• WebKit upstream ticket #244770
• WebKit/WebKit#4000

[nikolaszimmermann]

Done.