Open this photo in gallery: People hold placards calling for China to release Canadian detainees Michael Spavor and Michael Kovrig outside a court hearing for Huawei Technologies Chief Financial Officer Meng Wanzhou at the B.C. Supreme Court in Vancouver, on March 6, 2019.LINDSEY WASSON/Reuters A national-security watchdog says China’s imprisonment of Michael Spavor and Michael Kovrig prompted it to delay the release of its 2020 review of Ottawa’s foreign intelligence collection unit, saying at the time there were “high sensitivities” about a public examination of the Global Security Reporting Program. The report from the first dedicated review of the Department…