flutter使用webview https证书过期不显示问题，忽略 SSL 错误
使用 flutter_inappwebview 插件，忽略 SSL 错误，用 onReceivedServerTrustAuthRequest 事件，并为指定请求或所有请求返回 ServerTrustAuthResponse(action: ServerTrustAuthResponseAction.PROCEED)。
child: InAppWebView(
initialUrlRequest: URLRequest(
url: Uri.parse("https://self-signed.badssl.com/")
),
onReceivedServerTrustAuthRequest: (controller, challenge) async {
return ServerTrustAuthResponse(action: ServerTrustAuthResponseAction.PROCEED);
},
),