`containsAtMain` does not handle `@main` on the same line as a multi-line end comment

The containsAtMain function call does not correctly return true with the following input

                /*
                This is a multi-line comment
                /* @main
                struct MyApp {
                    static func main() {
                        print("Hello, World!")
                    }
                }

Search for the GitHub issue in the swift-package-manager repository to located an impacted automated test