fixup! feat: check connection performance of mail service

Signed-off-by: SebastianKrupinski <[email protected]>

lib/Db/MailAccountMapper.php

@@ -247,7 +247,7 @@ public function getRandomAccountIdsByImapHost(string $host, int $limit = 3): arr
 		// Pick 3 random accounts or any available
 		if ($ids !== [] && count($ids) >= $limit) {
 			$rids = array_rand($ids, $limit);
-			return array_intersect_key($ids, array_flip($rids));
+			return array_intersect_key($ids, array_values($rids));
 		}
 		return $ids;
 	}