[full-ci] [10.11.0] Allow editing of public link shared single files 10.11

[phil-davis]

Description

This is the same as #40317 but targeted at release-10.11.0 branch.

Related Issue

How Has This Been Tested?

CI

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:
• Changelog item, see TEMPLATE

[jnweiger]

Looks good, has all the 6 comits of original 40317.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication

[mrow4a]

@phil-davis @pmaier1 to decide whether some minor fixes are needed to be backported from #40289 in a commit here, or we also add into 10.11 release #40289 that contains new feature and a fix to the one from this PR

[mrow4a]

@phil-davis backported changed from https://github.com/owncloud/core/pull/40289/files in the commit here 96c704c

[ownclouders]

💥 Acceptance tests pipeline webUIWebdavLockProt-chrome-mariadb10.2-php7.4 failed. The build has been cancelled.

https://drone.owncloud.com/owncloud/core/36755/160

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
8 out of 9 committers have signed the CLA.

✅ ScharfViktor
✅ SwikritiT
✅ mmattel
✅ SagarGi
✅ kiranadh1452
✅ DeepDiver1975
✅ phil-davis
✅ mrow4a
❌ ownclouders
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[phil-davis]

I made a mess of rebasing, accidentally!!! I will try to fix it soon, but I need to go to the airport now. Sorry.

[phil-davis]

See #40342

[jnweiger]

Superceeded by #40342