[Bug]: Previews and Download not available for Link Shares of Remote Shares

Bug description

While testing the backports for https://github.com/nextcloud/server/pull/51389, I noticed that although link shares can be opened, previews are not displayed, and the download button is missing. This behavior seems unusual, but I'm not familiar with the topic, so it might be the expected outcome. 🤷

Steps to Reproduce:

1. Set up Alice on Instance A and Bob on Instance B.
2. Alice uploads a folder containing pizza pictures to Instance A.
3. Alice shares the pizza folder with Bob on Instance B, granting "View only" or "Can edit" permissions.
4. Bob can open the share, view the pizza pictures, and sees the download option.
5. Bob creates a public link share for the folder.
6. When opening the link, the list of images is displayed, but previews are not shown, and it's not possible to open or download the images.

Additionally, I observed that the "hide download" option for the link share is enabled and cannot be unchecked because checkInheritedAttributes overwrites it. Reverting https://github.com/nextcloud/server/pull/50642 did not help.

Instance A (share initiator)

Instance B (share receiver)

Instance B (public link share)

Expected behavior:

I'm unsure 🙈

Reproduce the Instance A/Instance B federated-share flow and the public link share using the pizza-picture steps. Start by tracing the mentioned checkInheritedAttributes behavior and compare the link-share permissions with the working remote share; clarify the expected preview and download behavior before treating consistent access in the public link as done.