The other FIDO platforms return non-zero values in this case, making us unique by having all zeros. This assigns a random, fixed, AAGUID instead.
rdar://115125044
https://github.com/WebKit/WebKit/pull/17599
I've filed https://bugs.webkit.org/show_bug.cgi?id=263333 to finish ripping out attestation code.
Committed 269536@main (711e9d271fec): <https://commits.webkit.org/269536@main> Reviewed commits have been landed. Closing PR #17599 and removing active labels.