perf(query): increase speed of user queries (#7126) (#7128)

* perf(query): increase speed of user queries

internal/query/user_by_id.sql

@@ -23,8 +23,6 @@ WITH login_names AS (SELECT
         (p.is_default IS TRUE AND p.instance_id = $2)
         OR (p.instance_id = $2 AND p.resource_owner = u.resource_owner)
       )
-      AND 
-        u.id = $1
     ORDER BY is_default
     LIMIT 1
   ) p ON TRUE
@@ -33,6 +31,9 @@ WITH login_names AS (SELECT
     ON 
       u.instance_id = d.instance_id
       AND u.resource_owner = d.resource_owner
+  WHERE
+    u.instance_id = $2
+    AND u.id = $1
 )
 SELECT 
   u.id