By Foo Yun Chee BRUSSELS (Reuters) -Apple is set to be hit with another fine next week for not fully complying with an order to open its App Store to rival forms of payment for dating apps in the Netherlands, Dutch antitrust watchdog ACM told Reuters. The iPhone maker has already racked up 45 million euros ($49 million) in penalties to date as ACM (Authority for Consumers and Markets) has slapped weekly 5 million euro fines on the company since January, with the ninth penalty handed out this week. Apple submitted a fresh proposal to the ACM this week in a bid to halt the sanction. The offer do…