UPDATE 4-At Biden's G7 debut, leaders look beyond COVID to trade and China
* Leaders talk about repairing the world economy * Macron raised social media and freedom of speech * Jobs and growth are the medicine we need - Johnson * Biden projects message of re-engagement with the world (Adds Facebook) LONDON, Feb 19 (Reuters) - Group of Seven leaders, who control a little under half of the world’s economy, on Friday sought to look beyond the COVID-19 pandemic towards rebuilding their battered economies with free trade and to countering China’s “non-market oriented” policies. U.S. President Joe Biden and Italian Prime Minister Mario Draghi debuted at the G7 vir...