Fix isInternetConnected return false when user connect wifi and vpn (…

…below Android 10) (#137)

Co-authored-by: travis.liao <travis.liao@ringcentral.com>

launchdarkly-android-client-sdk/src/main/java/com/launchdarkly/sdk/android/LDUtil.java

@@ -50,6 +50,7 @@ static boolean isInternetConnected(Context context) {
                                 || nwc.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)
                                 || nwc.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET)
                                 || nwc.hasTransport(NetworkCapabilities.TRANSPORT_BLUETOOTH)
+                                || nwc.hasTransport(NetworkCapabilities.TRANSPORT_VPN)
                 );
             } else {
                 NetworkInfo active = cm.getActiveNetworkInfo();