By Patturaja Murugaboopathy and Simon Jessop LONDON (Reuters) – Demand for sustainable stock funds waned in February as Russia’s invasion of Ukraine hit investor sentiment and higher gas prices and energy security fears bolstered the appeal of the traditional Oil & Gas sector. Interest in environmental, social and corporate governance (ESG) issues such as climate change has surged in recent years, leading many investors to avoid the high carbon-emitting energy sector, but this got a boost after the conflict began in late February. While the STOXX Europe 600 fell 3.4%, the Oil & Gas sector rose…