Disambiguate Address.state_province_id:abbr (MySQL; simpler version)

Consider `ContactJoinTest::testCreateWithPrimaryAndBilling` which writes the value:

  'address_billing.state_province_id:abbr' => 'AK',

The symbol 'AK' can map to three places: Akwa Ibom (Nigeria), Atakora
(Benin), and Alaska (USA).  This is an ambiguous choice.  It should be
resolved in a consistent way.

One flavor of ambiguity comes from MySQL.  When loading abbreviations, Civi
queries with `ORDER BY abbreviation`.  This is a *typically* stable, but it
has no *guaranteed* resolution.  Adding a secondary sort key makes the
outcome clear/unambiguous.

CRM/Core/PseudoConstant.php

@@ -1499,7 +1499,8 @@ public static function renderOptionsFromTablePseudoconstant($pseudoconstant, &$p
     $select = 'SELECT %1 AS id, %2 AS label';
     $from = 'FROM %3';
     $wheres = [];
-    $order = 'ORDER BY %2';
+    $order = 'ORDER BY %2, id';
+    // Example: 'ORDER BY abbreviation, id' because abbreviations are not unique.
 
     // Use machine name in certain contexts
     if ($context === 'validate' || $context === 'match') {