Second attempt at preventing "empty homepage" flash

The delay in fetching homepages causes the "empty homepage" splash to appear briefly for the authenticated case.

Part 2 of 61630930

ui/page/home/index.js

@@ -5,7 +5,7 @@ import { doFetchActiveLivestreams } from 'redux/actions/livestream';
 import { selectAdBlockerFound } from 'redux/selectors/app';
 import { selectActiveLivestreams, selectFetchingActiveLivestreams } from 'redux/selectors/livestream';
 import { selectFollowedTags } from 'redux/selectors/tags';
-import { selectHasOdyseeMembership, selectUserVerifiedEmail } from 'redux/selectors/user';
+import { selectHasOdyseeMembership, selectHomepageFetched, selectUserVerifiedEmail } from 'redux/selectors/user';
 import { selectSubscriptions } from 'redux/selectors/subscriptions';
 import { selectShowMatureContent, selectHomepageData, selectClientSetting } from 'redux/selectors/settings';
 
@@ -17,6 +17,7 @@ const select = (state) => ({
   authenticated: selectUserVerifiedEmail(state),
   showNsfw: selectShowMatureContent(state),
   homepageData: selectHomepageData(state),
+  homepageFetched: selectHomepageFetched(state),
   activeLivestreams: selectActiveLivestreams(state),
   fetchingActiveLivestreams: selectFetchingActiveLivestreams(state),
   hideScheduledLivestreams: selectClientSetting(state, SETTINGS.HIDE_SCHEDULED_LIVESTREAMS),

ui/page/home/view.jsx

@@ -33,6 +33,7 @@ type Props = {
   subscribedChannels: Array<Subscription>,
   showNsfw: boolean,
   homepageData: any,
+  homepageFetched: boolean,
   activeLivestreams: any,
   doFetchActiveLivestreams: () => void,
   fetchingActiveLivestreams: boolean,
@@ -50,6 +51,7 @@ function HomePage(props: Props) {
     authenticated,
     showNsfw,
     homepageData,
+    homepageFetched,
     activeLivestreams,
     doFetchActiveLivestreams,
     fetchingActiveLivestreams,
@@ -237,7 +239,7 @@ function HomePage(props: Props) {
         </>
       )}
 
-      {sortedRowData.length === 0 && authenticated && (
+      {sortedRowData.length === 0 && authenticated && homepageFetched && (
         <div className="empty--centered">
           <Yrbl
             alwaysShow