By Sruthi Shankar, Devik Jain and Samuel Indyk (Reuters) – UK’s main stock indexes closed higher on Thursday after Liz Truss said she would resign as British prime minister, bringing a measure of relief to investors after her ill-fated tax plans unleashed turmoil in financial markets. The blue-chip FTSE 100 rose 0.3%, but gains were capped as a jump in the pound hurt dollar earners such as AstraZeneca and Diageo. The battered FTSE 250 index, more exposed to the domestic economy, climbed 0.8%. Homebuilders, retailers, REITs, and real estate, which suffered the brunt of selloff recently due to m…