fix: Calculate fault tolerance when keys are not fully replicated

Whem the database is not fully replicated to remote, fault tolerance
can be calculated by couting total number of tLogs replicas in primary
and satellite - 1, as we can lose all but one of those, but we were
subtracting 2 instead of 1.

fdbclient/DatabaseConfiguration.h

@@ -174,7 +174,8 @@ struct DatabaseConfiguration {
 			return 1 + std::min(std::max(tLogReplicationFactor - 1 - tLogWriteAntiQuorum, worstSatellite - 1),
 			                    storageTeamSize - 1);
 		} else if (worstSatellite > 0) {
-			return std::min(tLogReplicationFactor + worstSatellite - 2 - tLogWriteAntiQuorum, storageTeamSize - 1);
+			// Primary and Satellite tLogs are synchronously replicated, hence we can lose all but 1.
+			return std::min(tLogReplicationFactor + worstSatellite - 1 - tLogWriteAntiQuorum, storageTeamSize - 1);
 		}
 		return std::min(tLogReplicationFactor - 1 - tLogWriteAntiQuorum, storageTeamSize - 1);
 	}