Use materialized views in the default-sql template (#1709)

## Changes

Materialized views now support `CREATE OR REPLACE`
([docs](https://docs.databricks.com/en/sql/language-manual/sql-ref-syntax-ddl-create-materialized-view.html))!
This makes it possible to use them with Workflows in DABs.This PR
updates the template to use a materialized view rather than a regular
view.

## Tests

Manually validated in production.

libs/template/templates/default-sql/template/{{.project_name}}/src/orders_daily.sql.tmpl

@@ -1,10 +1,9 @@
 -- This query is executed using Databricks Workflows (see resources/{{.project_name}}_sql_job.yml)
-{{- /* We can't use a materialized view here since they don't support 'create or refresh' yet.*/}}
 
 USE CATALOG {{"{{"}}catalog{{"}}"}};
 USE IDENTIFIER({{"{{"}}schema{{"}}"}});
 
-CREATE OR REPLACE VIEW
+CREATE OR REPLACE MATERIALIZED VIEW
   orders_daily
 AS SELECT
   order_date, count(*) AS number_of_orders