The Hong Kong government dug its heels in on Friday over a controversial extradition proposal even as Taiwan, one immediate beneficiary of the legislation, made clear it had no desire to use the new law to seek justice in a high-profile murder case.Late on Thursday, the city’s government found itself in a spot when Taipei’s Mainland Affairs Council said it would not agree to the transfer of a murder suspect if the proposal put its citizens at risk of being sent to mainland China.But a senior…