fix(server): Ensure local server closes on terminateApp with forwardingPort#805

KazuCocoa merged 3 commits intoappium:mainappium/appium-flutter-driver:mainfrom

GayatriNairAtBrowserstack:forwardingport_fixGayatriNairAtBrowserstack/appium-flutter-driver:forwardingport_fixCopy head branch name to clipboard