Fix random collisions in tests widening mt_rand ranges

Increase mt_rand range from (1, 99) to (1, 999999) in getRandomProvince
and from (1, 999) to (1, 999999) in ProductoTest::getTestSupplier to
avoid duplicate key errors on CI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: NeoRazorX

Test/Core/Model/ProductoTest.php

@@ -764,7 +764,7 @@ private function getTestProduct(): Producto
 
     private function getTestSupplier(): Proveedor
     {
-        $num = mt_rand(1, 999);
+        $num = mt_rand(1, 999999);
         $supplier = new Proveedor();
         $supplier->codproveedor = 'TEST' . $num;
         $supplier->nombre = 'Test Supplier ' . $num;

Test/Traits/RandomDataTrait.php

@@ -170,7 +170,7 @@ protected function getRandomProduct(): Producto
     protected function getRandomProvince(string $codpais): Provincia
     {
         $province = new Provincia();
-        $province->provincia = 'Test Province ' . mt_rand(1, 99);
+        $province->provincia = 'Test Province ' . mt_rand(1, 999999);
         $province->codpais = $codpais;
         $province->alias = 'TP' . mt_rand(1, 999);