fix(flutter): 首页频道选中态改用主题色

lib/pages/home/home_browse_view.dart

@@ -255,12 +255,10 @@ class _HomeBrowseViewState extends State<HomeBrowseView> {
     required bool selected,
     required bool overImage,
   }) {
-    final color = overImage
-        ? (selected ? Colors.white : Colors.white70)
-        : (selected ? AppColors.onSurface : AppColors.muted);
-    final underlineColor = selected
-        ? (overImage ? Colors.white : AppColors.blue)
-        : Colors.transparent;
+    final color = selected
+        ? AppColors.blue
+        : (overImage ? Colors.white70 : AppColors.muted);
+    final underlineColor = selected ? AppColors.blue : Colors.transparent;
     return Semantics(
       button: true,
       selected: selected,