HONG KONG — Dozens of people on Sunday joined Hong Kong’s first authorized protest since the lifting of major COVID-19 restrictions under unprecedentedly strict rules, including wearing a numbered badge around their necks. The rules set out by the police, who cited security reasons, came as the financial hub was promoting its return to normalcy after years of anti-virus controls and political turmoil. During the pandemic, protests were rare due to COVID-19 restrictions.