Rebecca Davis editorAs the days stretch on without any word of a China release for “Shang-Chi and the Legend of the Ten Rings,” there are increasingly slim odds that residents of the world’s largest film market will get to see Marvel’s first Asian superhero on the big screen.Those odds have grown slimmer still after jingoistic social media users unearthed content featuring “Shang-Chi” star Simu Liu that they say “insults China.” In the country’s current political climate, the accusations could