[BUG] Opening a hidden channel/dm throws exception and does not show on sidebar

Description:

When you open a room that is hidden, two exceptions are thrown: Exception in queued task: Error: Can't set timers inside simulations and Exception in queued task: Error: Unknown id for changed: <roomId>

Server Setup Information:

• Version of Rocket.Chat Server: 0.64.0 (reproducible on open.rocket.chat)
• Operating System: Elementary OS
• Deployment Method(snap/docker/tar/etc): Development
• Number of Running Instances: 1
• Node Version: v8.11.1

Steps to Reproduce:

1. Open the browser's dev console
2. Hide any channel or DM
3. Go to the sideNav search and try to open the hidden channel or DM.

Expected behavior:

1. A clean console
2. Room open (check)
3. Opened room being listed in the sideNav

Actual behavior:

1. Two exceptions thrown are logged into the console
2. Room open (check)
3. Opened room not listed in the sideNav

Note: This behavior isn't consistent, sometimes it works, sometimes it does not.

Bonus bug:

If there are no current opens in a room section (example, no channels opened and "You are not part of any channel" displaying), when you open a hidden channel, the message is gone because there is a room now but it crashes before displaying.

Start in the sideNav search flow that opens hidden channels or DMs, using the browser console to reproduce both reported exceptions. Trace why the opened room is not added to the sidebar, including the empty-room-section case; done means the room appears in the sideNav and opening it leaves a clean console.