The daughter of one of Malaysia’s most powerful sultans married her Dutch fiancé on Monday in a lavish ceremony steeped in centuries of tradition. Princess Tunku Tun Aminah Sultan Ibrahim, 31, the only daughter of the Sultan of Johor, tied the knot with Dennis Muhammad Abdullah, 28, following a three-year romance. The Dutchman, who has converted to Islam, and the princess were married according to Muslim Malay custom at the Serene Hill Palace, the royal family’s…