Add missing default value for short url visits count

module/Core/config/entities-mappings/Shlinkio.Shlink.Core.Visit.Entity.ShortUrlVisitsCount.php

@@ -28,6 +28,7 @@ return static function (ClassMetadata $metadata, array $emConfig): void {
     $builder->createField('count', Types::BIGINT)
             ->columnName('count')
             ->option('unsigned', true)
+            ->option('default', 1)
             ->build();
 
     $builder->createField('slotId', Types::INTEGER)

module/Core/src/Visit/Listener/ShortUrlVisitsCountPreFlushListener.php

@@ -117,9 +117,12 @@ final readonly class ShortUrlVisitsCountPreFlushListener
            ->setParameter('short_url_id', $shortUrlId)
            ->setParameter('potential_bot', $potentialBot)
            ->setParameter('slot_id', $slotId)
-            ->forUpdate()
            ->setMaxResults(1);
 
+        if ($conn->getDatabasePlatform()::class === SQLServerPlatform::class) {
+            $qb->forUpdate();
+        }
+
         $resultSet = $qb->executeQuery()->fetchOne();
         $writeQb = ! $resultSet
             ? $conn->createQueryBuilder()