[Bug]: Copying a folder containing live photos causes them to lose their live photo functionality

[kesselb]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Copying a folder containing live photos causes them to lose their live photo functionality.

Steps to reproduce

1. Have a folder containing live photos files
2. Copy the folder somewhere
3. No more live photos

Screencast.From.2024-11-14.16-19-03.webm

Expected behavior

Live photos should still work

Nextcloud Server version

master

Nextcloud Signing status

Additional info

The state about live photos in stable28 is a bit weird.

Pull Request	Merge date	28	29	30
#41308	2023-11-09	✅	✅	✅
#41601	2023-11-21	✅	✅	✅
#41765	2023-11-30	✅	✅	✅
#42154	2023-12-11	✅	✅	✅
#42170	2024-03-08	❌	✅	✅
#44069	2024-03-14	✅	✅	✅

I think the backport for 42170 to stable28 is worth doing since copying files is pretty important. I gave it a shot, but integrating the changes from 44069 was tricky. My attempt could really use a review and testing from someone more experienced with this feature: https://github.com/nextcloud/server/compare/stable28...backport/42170/stable28?expand=1