Adobe Express SDK Fails to login in Safari due to missing requestStorageAccess

Logging into the v4 Embed doesn't seem to work and causes it to login momentarily but then refresh and reload the embed to a logged out state in seconds.

Searching the forums it seems reported previously and is related to Safari blocking third-party cookies.

It looks like there's missing implementation in the Embed SDK to make this work. Safari does support requestStorageAccess to allow users to opt-in to allowing it to work.

https://privacysandbox.google.com/cookies/storage-access-api

It would be worth attempting to detect if Partitioned cookie flag is supported too as Chrome/Edge and Safari 26 will support that. (CHIPS - Cookies Have Independent Partitioned State) Not easy to detect though.