Fix removal of Jinja tags

Author: BAntonellini

src/dbt_core_interface/project.py

@@ -703,8 +703,9 @@ def generate_server_node(
 
         This is a context manager that will clear the node after execution and leverages a mutex during manifest mutation.
         """
-        # Remove {% ... %} patterns from the SQL string
-        sql = re.sub(r'{%.*?%}', '', sql, flags=re.DOTALL)
+        # Remove only the opening and closing snapshot tags, keep the body
+        sql = re.sub(r'{%\s*snapshot\b.*?%}', '', sql, flags=re.DOTALL)
+        sql = re.sub(r'{%\s*endsnapshot\s*%}', '', sql, flags=re.DOTALL)
         with self.manifest_mutation_mutex:
             self._clear_node(node_name)
             sql_node = self.sql_parser.parse_remote(sql, node_name)