Gulf business figures have rallied behind Jensen Huang as Nvidia's board weighs whether to remove its co-founder and chief executive over two alleged affairs."If he is forced to depart, it will be big loss for the world, not for America, for the world. This guy has done a great job," Hussain Sajwani, founder and chairman of Damac Properties, said at Bloomberg Invest in Dubai on Thursday.Saudi investor Prince Khaled bin Alwaleed, founder of KBW…