Add state labels at low zoom levels (#969)

* Remove state labels zoom, rank, and country conditions from layer function

* Don't add labels for zooms 0 and 1

If we check Bright, Positron, or Dark styles, they all show a huge lack of data about states and regions. At zoom 2, for big countries like Canada, Brazil, China or Australia there are big patches of white space (aka cartographer's *horror vacui* 😅)

layers/place/layer.sql

@@ -77,11 +77,7 @@ FROM (
          FROM osm_state_point
          WHERE geometry && bbox
            AND name <> ''
-           AND ("rank" + 2 <= zoom_level)
-           AND (
-                 zoom_level >= 5 OR
-                 is_in_country IN ('United Kingdom', 'USA', 'Россия', 'Brasil', 'China', 'India') OR
-                 is_in_country_code IN ('AU', 'CN', 'IN', 'BR', 'US'))
+           AND zoom_level > 1
 
          UNION ALL