remove lessonTitleText in training module

ios/OralTrainer/Views/PlayerSectionView.swift

@@ -6,6 +6,7 @@ struct PlayerSectionView: View {
     var showsContinuousToggle: Bool
     @Binding var continuousPlayback: Bool
     var showsSubtitle: Binding<Bool>? = .constant(true)
+    var showsLessonTitle: Bool = true
     var onFullscreen: () -> Void
 
     @State private var progressDragging = false
@@ -74,10 +75,12 @@ struct PlayerSectionView: View {
 
     private var sentencePanel: some View {
         VStack(alignment: .leading, spacing: 6) {
-            Text(controller.currentItem?.title ?? "未选择课程")
-                .font(.system(size: 17, weight: .bold))
-                .foregroundColor(.white)
-                .lineLimit(1)
+            if showsLessonTitle {
+                Text(controller.currentItem?.title ?? "未选择课程")
+                    .font(.system(size: 17, weight: .bold))
+                    .foregroundColor(.white)
+                    .lineLimit(1)
+            }
             if showsContinuousToggle {
                 HStack(spacing: 0) {
                     Text("连续播放")