Guest user can seemingly check in/check out any asset without permissions

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.1.0 Beta 3, 7.1.X, Master
• Component/s: Documents & Media
• Labels: None
• Fix Priority: 4
• Sprint: 003 - Venusaur
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/59152
• Bug Type: Regression Bug

Steps to reproduce:

1. Add a DM portlet to site page
2. Enable actions for documents
3. Add a couple of assets, granting only VIEW permissions to guest
4. Log out
5. As guest, assert assets can be viewed

Expected result:
Assets can be viewed but cannot be checked in or checked out.

Actual result:
Assets can be viewed but can be checked in/checked out using the management toolbar.

While checking in/checking out any asset results in a success message, the asset is not actually checked in.

Reproduced on:
Tomcat 9.0.7 + MySQL 5.7.
Portal master GIT ID: d3c3dc6e3afd69606cbe2ad1f9642c1066ac756d