Disabling Threads doesn't hide the "Threads" button

[tassoevan]

Description:

When disabling threads, the "Threads" button keeps showing on room actions bar (top right).

Steps to reproduce:

1. Disable threads going into Administration > Threads > Enable and setting it to False.
2. Open a room.

Expected behavior:

Do not see "Threads" button on the room actions bar.

Actual behavior:

The button is present. On clicking on it, the "Threads" tab is shown empty on the contextual bar and an error toast is triggered with "Not allowed" message.

Server Setup Information:

• Version of Rocket.Chat Server: 1.2.0-develop
• Operating System: MacOS Mojave
• Deployment Method: source code
• Number of Running Instances: 1
• DB Replicaset Oplog: enabled
• NodeJS Version: 8.11.4
• MongoDB Version: 4.0.2

Additional context

[himpierre]

#14708