“The Undoing” actor who played caddish Daniel Cleaver alongside Texas-born Zellweger in the hugely popular flick admitted that he was initially skeptical of the unusual casting.“There was a whole scandal about why isn’t this a British actress?” Grant said in a new BBC2 documentary, “Being Bridget Jones.”“I didn’t know Renée Zellweger, and a Texan playing a British character? It did seem like a stretch,” he confessed.Grant revealed that the two-time Oscar winner’s first attempt at a British