HONG KONG—Hong Kong is dropping a provision for most consular staff to serve quarantine at home, opting for hotel stays instead, as it doubles down on some of the world’s toughest coronavirus curbs, as the local pro-Beijing government hopes to sway mainland China to open the border with the city. The Beijing-approved leaders of the former British colony are following Beijing’s lead in retaining draconian travel curbs, in contrast to a global trend of opening up and living with the coronavirus. “We are doing this to ensure the risk is reduced to the minimum, because we can see that the cases in Hong Kong are imported cases,” Chief Secretary John Lee told reporters on Monday, adding that the new rules take effect on Nov. 12. The government had identified two imported cases linked to consular staff, it said in a separate statement. Until now, staff at consulates have only been …