[App Files] Owner can't modify rights of a public reshared link done by other user

[brice-shadow]

Reproduction

Reproducible ?

• [x] Yes.
• [ ] No.

Regularity ?

• [x] Always.
• [ ] Sometimes.
• [ ] Unable to reproduce.

Regression ?

• [x] Yes.
• [ ] No.
• [ ] New Feature.

Steps to reproduce ?

1. Go to web app via a main account (for the test: admin)
2. Go to app files
3. Do a collab sharing on a file/folder
4. Connect on the shared user on web app
5. Do a public share on the shared file/folder
6. Try on main account to modify public shared link rights

Obtained results: App says that user can't change the rights

Environment and versions

Client Environment	VM Environment
26.0.4.3

Browser used:

• [x] Chrome Windows
• [x] Firefox Windows