Bug 268543

Up until now we only had mac-wk2-pixel baselines (legacy SVG engine, pixel tests using macOS Sonoma 14.3) and Mac-wk2-lbse-text (text results + rare pixel test exceptions for all tests, but with LSE enabled) for the LayoutTests/svg/ subdirectory. This was enough for initial bootstrapping, but now that most basic painting features are implemented, it makes sense to run all of WPT as well (+ css3/masking, since it contains important HTML/CSS clipping/masking tests utilizing SVG resources). The idea is that I first generate, as usual, a macOS 14.3 pixel test baseline for the whole WPT 'svg' directory, placed in 'mac-wk2-pixel' (only needs a few Sonoma specific exceptions, most results are shared with platform/Mac). Then I generate a LBSE-enabled baseline, placed in 'Mac-wk2-lbse-text' that contains the LBSE specific render tree dumps + pixel test results, where needed. The failing tests, where a text-rebaseline is not enough, and the pixel test clearly differs, are marked as such in the 'TestExpectations' file in the 'mac-wk2-lbse-text' directory.