fix(player): 调整 rail 倍速弹窗与进度时间

lib/pages/player/widgets/home_feed_overlay.dart

@@ -55,7 +55,7 @@ class HomeFeedOverlay extends StatelessWidget {
           _header(context),
           Expanded(
             child: Align(
-              alignment: Alignment.centerRight,
+              alignment: const Alignment(1.0, 0.45),
               child: Padding(
                 padding: const EdgeInsets.fromLTRB(0, 0, 12, 16),
                 child: _rail(),