test: Fix internal_schema_cache_sleep after 747c78f6

The $subject commit broke internal_schema_cache_sleep for other tests.
This reverts the order change, but keeps the scaling by x1000 to ms and
thus changes other users of this setting to the new scale.

test/io/config.py

@@ -71,7 +71,7 @@ def slow_schema_cache_env(defaultenv):
     "Slow schema cache load environment PostgREST."
     return {
         **defaultenv,
-        "PGRST_INTERNAL_SCHEMA_CACHE_SLEEP": "1",  # this does a pg_sleep internally, it will cause the schema cache query to be slow
+        "PGRST_INTERNAL_SCHEMA_CACHE_SLEEP": "1000",  # this does a pg_sleep internally, it will cause the schema cache query to be slow
         # the slow schema cache query will keep using one pool connection until it finishes
         # to prevent requests waiting for PGRST_DB_POOL_ACQUISITION_TIMEOUT we'll increase the pool size (must be >= 2)
         "PGRST_DB_POOL": "2",