add feature flag to turn on relation filtering for get_catalog

dbt/adapters/snowflake/impl.py

@@ -3,7 +3,7 @@
 
 import agate
 
-from dbt.adapters.base.impl import AdapterConfig, ConstraintSupport  # type: ignore
+from dbt.adapters.base.impl import AdapterConfig, AdapterFeature, ConstraintSupport  # type: ignore
 from dbt.adapters.base.meta import available
 from dbt.adapters.sql import SQLAdapter  # type: ignore
 from dbt.adapters.sql.impl import (
@@ -256,6 +256,10 @@ def submit_python_job(self, parsed_model: dict, compiled_code: str):
     def valid_incremental_strategies(self):
         return ["append", "merge", "delete+insert"]
 
+    @classmethod
+    def has_feature(cls, feature: AdapterFeature) -> bool:
+        return feature in [AdapterFeature.CatalogByRelations]
+
     def debug_query(self):
         """Override for DebugTask method"""
         self.execute("select 1 as id")