Use type instead of isAccount flag

postgres/queries/accounts.sql

@@ -22,7 +22,7 @@ GROUP BY accounts.id, accounts.name
 ORDER BY accounts.name;
 
 -- name: SearchAccounts :many
-SELECT accounts.id, accounts.budget_id, accounts.name, true as is_account FROM accounts
+SELECT accounts.id, accounts.budget_id, accounts.name, 'account' as type FROM accounts
 WHERE accounts.budget_id = @budget_id
 AND accounts.name LIKE @search
 ORDER BY accounts.name;