Organize sandbox attribute values; add missing sandbox values#18862

Merged

Elchi3 merged 3 commits intomdn:mainfrom queengooborg:html/elements/iframe/sandbox

Apr 24, 2023

+529-294

Commits on Feb 9, 2023

Commits on Apr 23, 2023

Add spec URLs; set allow-downloads-without-user-activation to deprecated
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committed