Hala, a Saudi Arabia-based fintech company, raised $157 million in one of the largest-ever funding rounds for an early-stage startup in the Middle East.The round was led by TPG, and Sanabil, a unit of the kingdom’s sovereign wealth fund, according to a statement. It valued Hala at roughly $900 million, according to a person familiar with the matter, who asked not to be identified discussing non-public information....