Use correct privacy when publishing lives

We don't really need to use a private privacy until the user submits the
second step, because it requires an additional and intentional step
(streaming the live in the RTMP URL) for the user

client/src/app/+videos/+video-edit/video-add-components/video-go-live.component.ts

@@ -106,7 +106,7 @@ export class VideoGoLiveComponent extends VideoSend implements OnInit, AfterView
 
     const video: LiveVideoCreate = {
       name,
-      privacy: this.highestPrivacy,
+      privacy: this.firstStepPrivacyId,
       nsfw: this.serverConfig.instance.isNSFW,
       waitTranscoding: true,
       permanentLive: this.firstStepPermanentLive,