Reorder POI data update and trigger creation to avoid refresh of materialized view on initial import (#780)

Reorder POI data update and trigger creation to avoid refresh of materialized view after update done by initial import.

I checked the other updates and there are OK.

layers/poi/poi.yaml

@@ -146,10 +146,10 @@ layer:
     query: (SELECT osm_id, geometry, name, name_en, name_de, {name_languages}, class, subclass, agg_stop, layer, level, indoor, rank FROM layer_poi(!bbox!, z(!scale_denominator!), !pixel_width!)) AS t
 schema:
   - ./public_transport_stop_type.sql
-  - ./update_poi_polygon.sql
-  - ./update_poi_point.sql
   - ./class.sql
   - ./poi_stop_agg.sql
+  - ./update_poi_polygon.sql
+  - ./update_poi_point.sql
   - ./layer.sql
 datasources:
   - type: imposm3