fix(player): 预解码观看全集首帧

test/player/player_fullscreen_test.dart

@@ -136,7 +136,11 @@ void main() {
     final fullLogic = _pageLogic(tester, fullPlayer);
     expect(fullLogic.session, isNot(same(sourceLogic.session)));
     final fullPlayerWidget = tester.widget<PlayerPage>(fullPlayer);
-    expect(fullPlayerWidget.initialFrameBytes, isNotNull);
+    expect(
+      fullPlayerWidget.initialFrameBytes != null ||
+          fullPlayerWidget.initialFrameProvider != null,
+      isTrue,
+    );
     expect(fullPlayerWidget.revealAfterFirstFrame, isTrue);
     final fullPlayerPort = fullLogic.session.active! as VideoPlayerPort;
     expect(fullPlayerPort.controller, isNot(same(feedPlayer.controller)));
@@ -265,7 +269,11 @@ void main() {
     );
     expect(player, findsOneWidget);
     final playerWidget = tester.widget<PlayerPage>(player);
-    expect(playerWidget.initialFrameBytes, isNotNull);
+    expect(
+      playerWidget.initialFrameBytes != null ||
+          playerWidget.initialFrameProvider != null,
+      isTrue,
+    );
     expect(playerWidget.revealAfterFirstFrame, isTrue);
     expect(playerWidget.initialIndex, 1);