* fix(engine): renders under WSL reach the GPU on Chrome 150 and later
Part of #5548.
* fix(engine): shorten the WSL browser env comment
* fix(engine): cite the Chromium bug in one line and allow the fallback test's removal
* fix(engine): drop WAYLAND_DISPLAY under WSL only when that is what reaches the GPU
* fix(engine): restore the WSL note from before the full-Chrome fallback
* test(engine): give the second worker's page load room on a busy Windows runner
* fix(engine): keep the Chromium bug comment under the line limit