Ko Thai, 725 W Magnolia Ave, Fort Worth. 469-978-0744. 11am-9pm Sun-Thu, 11am-10pm Fri-Sat. When it was announced that the sister location of Bedford’s much-lauded Koracha Thai would open in the new building opposite Walloon’s on the Near Southside, a lot of folks' eyes bugged out. The renderings depicted a flashy, posh retreat, something definitely not…