Unable to view Contact Chat History as livechat manager

Description:

Unable to view Contact Chat History as livechat manager

Steps to reproduce:

1. Open livechat from client
2. Assign user livechat manager role
3. Open Contact chat history
4. Select an older chat from list

Expected behavior:
Able to view chat history

Actual behavior:
If the user has role admin only the contact chat history is available but if it is assigned or also assigned the livechat manager role we are forbidden from seeing the page

Server Setup Information:

Version of Rocket.Chat Server: 3.6.0/3.6.1/3.6.2
Operating System: Debian 9
Deployment Method: tar
Number of Running Instances: 1
NodeJS Version: 12.16.1
MongoDB Version: 4.0.20

Client Setup Information

Desktop App or Browser Version: Google Chrome 85 and Firefox 80
Operating System: Debian 9 and Windows 10

Additional context
Fiddling with the permissions did not solve the problem, there seems to be an issue with the livechat manager role as if it is assigned all the permissions from the admin role it still doesn't work as expected

Reproduce the issue by assigning the livechat manager role and opening an older entry in Contact chat history. Trace the permission checks involved in that page and compare them with the admin-only behavior described here. Done means a livechat manager can view older contact chats without being granted admin access, with a regression test covering the role.