LivestreamSection: only apply excludedChannelIds for non-Wild-West

Message from Tom:
> use excluded on both livestream and regular content sections. If not wild west, don't use exluded

ui/page/discover/view.jsx

@@ -97,7 +97,7 @@ function DiscoverPage(props: Props) {
         <LivestreamSection
           tileLayout={repostedUri ? false : tileLayout}
           channelIds={channelIds}
-          excludedChannelIds={excludedChannelIds}
+          excludedChannelIds={isWildWest ? excludedChannelIds : null}
           searchLanguages={dynamicRouteProps?.options?.searchLanguages}
           langParam={langParam}
           hideMembersOnlyContent={hideMembersOnlyContent}