By Moira Warburton and Richard Cowan WASHINGTON (Reuters) -The U.S. Senate on Thursday approved a bill that would ban companies from forcing employees who allege sexual assault or harassment to settle their claims with an arbiter without the option of filing a lawsuit. The bill, which the House of Representatives passed earlier this week, was sent to President Joe Biden to sign into law. The Senate approved it in a voice vote, indicating broad bipartisan support in the narrowly divided chamber. The Ending Forced Arbitration of Sexual Assault and Sexual Harassment Act was first sponsored by Dem…