Include ephemeral models when dropping orphaned relations

When checking for orphaned relations to drop, include ephemeral models so potential existing objects are dropped. The edge case is when a model was previously materialized as a table or view and then later changed to ephemeral, the old object never gets cleaned up and remains in the state it was last updated.

Author: eugenekim-orrum

transform/macros/tooling/ci-cd/drop_orphaned_relations.sql

@@ -19,6 +19,12 @@
             {%- set database_name = node.database.upper() -%}
             {%- set schema_name = node.schema.upper() -%}
             {%- set table_name = node.alias if node.alias else node.name -%}
+            {%- set materialized = node.config.materialized | default(node.materialized) -%}
+
+            -- Skip ephemeral models so old physical relations get cleaned up
+            {%- if materialized == 'ephemeral' -%}
+                {%- continue -%}
+            {%- endif -%}
 
             -- Add db name if it does not exist in the dict
             {%- if not database_name in current_model_locations -%}