MM-64926: Membership sync sends sensitive data to remote (#33560) (#33577)

Automatic Merge

server/platform/services/sharedchannel/membership.go

@@ -322,7 +322,7 @@ func (scs *Service) syncMembershipBatchToRemotes(syncMsg *model.SyncMsg, remotes
 				// Check if user profile needs to be synced
 				doSync, _, sErr := scs.shouldUserSync(user, syncMsg.ChannelId, rc)
 				if sErr == nil && doSync {
-					enrichedSyncMsg.Users[user.Id] = user
+					enrichedSyncMsg.Users[user.Id] = sanitizeUserForSyncSafe(user)
 				}
 			}
 		}