fix(flutter): 去除关注 tab 并加深色首页导航

lib/pages/player/widgets/home_feed_overlay_parts.dart

@@ -2,24 +2,21 @@
 
 part of 'home_feed_overlay.dart';
 
-/// 顶部频道 tab：关注/漫剧点击提示即将上线。
+/// 顶部频道 tab：漫剧点击提示即将上线。
 enum _FeedTab {
-  following,
   anime,
   real,
   recommend;
 
-  bool get comingSoon => this == _FeedTab.following || this == _FeedTab.anime;
+  bool get comingSoon => this == _FeedTab.anime;
 
   String get keyName => switch (this) {
-    _FeedTab.following => 'follow',
     _FeedTab.anime => 'anime',
     _FeedTab.real => 'real',
     _FeedTab.recommend => 'recommend',
   };
 
   String label(AppLocalizations l10n) => switch (this) {
-    _FeedTab.following => l10n.feedTabFollowing,
     _FeedTab.anime => l10n.feedTabAnime,
     _FeedTab.real => l10n.feedTabReal,
     _FeedTab.recommend => l10n.feedTabForYou,