Non admin users unable to pin message in direct messages

Description:

In the current implementation of Rocket.Chat, non-admin users are unable to pin messages in direct messages. The restriction should not apply to direct messages, where all participants should have the ability to pin messages.

Steps to reproduce:

Log in as a non-admin user.
Open a direct message.
Try to pin a message.

Expected behavior:

The non-admin user should be able to pin messages in the direct message.

Actual behavior:

The non-admin user is unable to pin messages .

https://github.com/user-attachments/assets/533c2bb9-d450-46b1-986d-afbfcf401edc

Server Setup Information:

• Version of Rocket.Chat Server: 6.12.1
• License Type:
• Number of Users: 4
• Operating System: MacOs
• Deployment Method:
• Number of Running Instances: 3
• DB Replicaset Oplog: Enabled
• NodeJS Version: 14.21.4 - x64
• MongoDB Version: 7.0.5

Client Setup Information

• Desktop App or Browser Version: 17.5
• Operating System: MacOS

Additional context

Relevant logs:

Reproduce the pinning attempt as a non-admin participant in a direct message, then trace the permission path for that action; the issue names no file or test to begin with. Done means direct-message participants can pin messages while the existing restriction remains appropriate elsewhere, with coverage for the reported scenario.