By Lisa Richwine LOS ANGELES (Reuters) – An unnamed woman has filed a lawsuit that accuses musician Chris Brown of drugging and raping her on a Florida yacht in December 2020 and seeks $20 million in damages from the Grammy-winning singer. The civil lawsuit, filed on Thursday by a musician and choreographer identified as Jane Doe, said she was invited by Brown to meet him at Star Island, Florida, home of rapper Sean Combs. When she arrived, she boarded a yacht and accepted Brown’s offer of a drink as they discussed her career, the filing said. After a second drink, the woman suddenly began to …