Replication slot not created in test.

[thruflo]

Running mix test on an app using phoenix_sync as a dependency results in this error. Presumably there's something up with the way Electric is creating the replication slot in test when running in embedded mode:

➜  conductor git:(main) ✗ mix test
Running ExUnit with seed: 20540, max_cases: 16

05:10:41.136 [error] :gen_statem {:"Elixir.Electric.ProcessRegistry:electric-embedded", {Electric.Postgres.ReplicationClient, nil}} terminating
** (Postgrex.Error) ERROR 55000 (object_not_in_prerequisite_state) replication slot "electric_slot_default" was not created in this database
    (stdlib 6.2) gen_statem.erl:3864: :gen_statem.loop_state_callback_result/11
    (stdlib 6.2) proc_lib.erl:329: :proc_lib.init_p_do_apply/3
Process Label: :replication_client
Queue: [info: :start_streaming]
Postponed: []