Guests should auto-accept incoming shares

[wiswedel]

Since in 18 all shares have to be accepted (nextcloud/server#16828), guests find an empty Nextcloud on first login.
Guest users should always auto-accept incoming shares, since receiving shares is the main reason for being a guest user after all.

Suggestion

have personal auto-accept settiing set to true by default for guest users

Side effort

Guest users who never have logged in as guests, but come as converted users (#208) in the first place, don't even see the incoming-share-notification and therefore can never accept the share.

[wiswedel]

CC @ChristophWurst

[wiswedel]

ref nextcloud/server#18385

[ChristophWurst]

Could be done in guests very similar to the UserShareAcceptanceListener in https://github.com/nextcloud/server/pull/18385/files#diff-dd0ce0f36cf8170b416d7d09954cc6dfR33

[wiswedel]

This should be addressed before the 18 release. Otherwise it breaks the Guests app's UX.

[rullzer]

Yeah well we have other stuff to fix first. If guests also have to press accept for now so be it.
It is on the list but not very high. Esp since we can fix it a week later as well in a separate release.

[wiswedel]

fix it a week later as well in a separate release

That'll be fine. Thanks.

[rullzer]

Let me take care of this oonish