Blocking a user in LDAP does not disable the account in RocketChat

Description:

Blocking a user in LDAP does not disable the account in RocketChat
the user was blocked a week ago, LDAP synchronization works and was successful, but the account works from the computer where the user was authorized before blocking

Steps to reproduce:

1. Customize LDAP integration(I use Microsoft AD)
2. Login LDAP account
3. Block users(in LDAP)
4. Force integration
5. Account will continue to work

Expected behavior:

the user should be logged out when re-accessing the server

Actual behavior:

User can chat

Server Setup Information:

• Version of Rocket.Chat Server: 3.14.1
• Operating System: ubuntu 20.04
• Deployment Method: tar
• Number of Running Instances: 1
• DB Replicaset Oplog:
• NodeJS Version: v12.21.0
• MongoDB Version: 4.0.23 / mmapv1

Client Setup Information

Any operating system, tested in Google chrome browser

Additional context

I believe that when a blocked LDAP account is detected, the associated rocket chat account should also be blocked

Start by tracing the LDAP integration synchronization described in the reproduction steps and how an existing Rocket.Chat session checks account status. Reproduce the blocked-account flow with the stated LDAP setup, then verify that synchronization prevents further chat access and logs the user out when they access the server again.