Re-enable webkit tests

[github-actions[bot]]

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[swissspidy]

I think the remaining ones are blocked by #611

[kleisauke]

I haven't been able to reproduce that error on non-x86 based architectures yet. As an experiment, we could try running the E2E WebKit tests on a macos-14 runner to verify if this issue persists.

FWIW, hopefully they prioritize that WebKit bug report, as it can probably be used for fingerprinting (e.g. to distinguish Silicon-based Macs from Intel-based ones).

[kleisauke]

After some thought, perhaps it might be just easier to pass the JSC_webAssemblyLLIntTiersUpToBBQ=0 env variable when running the WebKit tests on Ubuntu? I had a quick go with commit https://github.com/kleisauke/media-experiments/commit/f428a27a433a29d72743d8cfe5242fbbc54fc091, which seems to work at first glance.