Add a setting in the Thread-Slack integration to prevent the admin account that authorized the app from being automatically added to every Slack channel created via the 'Open in channel' action on a Slack card. Currently, when any user clicks this button, the admin account is pulled into the channel and shown as the inviter, even if that admin has no involvement with the ticket. This causes confusion, privacy concerns, and requires purchasing an additional Slack license to work around by using a separate generic admin account. A configurable option should allow admins to disable auto-joining and ensure invite attribution correctly reflects the actual user who initiated the action.