Fix materialized_views filters when listing relations

Before the change, the `list_relations_without_caching` macro queried
`system.metadata.materialized_views` with no effective filter on the
catalog and schema name. In theory the Trino optimizer could figure out
the effective predicate on the `system.metadata.materialized_views`
table, but in practice it was not happening, and all materialized views
from all catalogs where being pulled.

.changes/unreleased/Fixes-20230927-124454.yaml

@@ -0,0 +1,7 @@
+kind: Fixes
+body: Fix materialized_views filters when listing relations
+time: 2023-09-27T12:44:54.858517+02:00
+custom:
+  Author: findepi
+  Issue: ""
+  PR: "353"

dbt/include/trino/macros/adapters.sql

@@ -38,11 +38,12 @@
            else t.table_type
       end as table_type
     from {{ relation.information_schema() }}.tables t
-    left join system.metadata.materialized_views mv
+    left join (
+            select * from system.metadata.materialized_views
+            where catalog_name = '{{ relation.database | lower }}'
+              and schema_name = '{{ relation.schema | lower }}') mv
           on mv.catalog_name = t.table_catalog and mv.schema_name = t.table_schema and mv.name = t.table_name
     where t.table_schema = '{{ relation.schema | lower }}'
-          and (mv.catalog_name is null or mv.catalog_name =  '{{ relation.database | lower }}')
-          and (mv.schema_name is null or mv.schema_name =  '{{ relation.schema | lower }}')
   {% endcall %}
   {{ return(load_result('list_relations_without_caching').table) }}
 {% endmacro %}