binlog replication works if both replica and master have the same `@@GLOBAL.SERVER_ID`

This is supposed to fail.

Repro:

1. Start a MySQL. Keep the default server id of 1.
2. Prepare it for replication.
```
```SQL
mysql> SET @@GLOBAL.ENFORCE_GTID_CONSISTENCY = ON;
Query OK, 0 rows affected (0.00 sec)

mysql> SET @@GLOBAL.GTID_MODE = OFF_PERMISSIVE;
Query OK, 0 rows affected (0.01 sec)

mysql> SET @@GLOBAL.GTID_MODE = ON_PERMISSIVE;
Query OK, 0 rows affected (0.01 sec)

mysql> SET @@GLOBAL.GTID_MODE = ON;
Query OK, 0 rows affected (0.00 sec)
```
3. Start a dolt sql-server on a different port
4. Prepare it to be a replica with same `@@GLOBAL.SERVER_ID`:
```SQL
mysql> SET @@GLOBAL.SERVER_ID=;
Query OK, 1 row affected (0.00 sec)

mysql> CHANGE REPLICATION SOURCE TO SOURCE_HOST='localhost', SOURCE_USER='root', SOURCE_PORT=3306;
Query OK, 0 rows affected (0.00 sec)
```

5. Start Replica works in this case but should fail because the primary and replica both have the same `SERVER_ID.`
```SQL
mysql> START REPLICA;
Query OK, 0 rows affected (0.00 sec)
```