fix strategy state persistence corrections

trex_core/adapters/persistence/sql/027_replace_slot_strategy_state_with_instance_map.sql

@@ -12,7 +12,7 @@ BEGIN
         DROP TABLE slot_strategy_state;
     END IF;
 END $$;
-CREATE TABLE slot_strategy_state (
+CREATE TABLE IF NOT EXISTS slot_strategy_state (
     slot_id UUID PRIMARY KEY,
     data JSONB NOT NULL DEFAULT '{}'::jsonb
 );