Hide description header in tvOS video info right column

The right column is already dedicated to video info so the "Description"
label is redundant. Add an opt-out `showsHeader` parameter to
`TVScrollableDescription` (default true) and pass false from
`VideoInfoView`; the player overlay and channel view keep the header.

Yattee/Views/Player/tvOS/TVDetailsPanel.swift

@@ -309,6 +309,7 @@ enum TVDetailsFocusItem: Hashable {
 struct TVScrollableDescription: View {
     let description: String
     @Binding var isScrollLocked: Bool
+    var showsHeader: Bool = true
 
     @FocusState private var isFocused: Bool
     @State private var scrollOffset: CGFloat = 0
@@ -358,6 +359,7 @@ struct TVScrollableDescription: View {
 
     private var descriptionContent: some View {
         VStack(alignment: .leading, spacing: 12) {
+            if showsHeader {
                 HStack {
                     Text("player.description")
                         .font(.headline)
@@ -371,6 +373,7 @@ struct TVScrollableDescription: View {
                             .foregroundStyle(.white.opacity(0.5))
                     }
                 }
+            }
 
             // Clipped container for scrollable text. The Rectangle owns the
             // layout size (fills available space) so the Text's intrinsic

Yattee/Views/Video/VideoInfoView.swift

@@ -675,7 +675,8 @@ struct VideoInfoView: View {
                     } else if let description = displayedVideo?.description, !description.isEmpty {
                         TVScrollableDescription(
                             description: description,
-                            isScrollLocked: $isDescriptionScrollLocked
+                            isScrollLocked: $isDescriptionScrollLocked,
+                            showsHeader: false
                         )
                         .frame(height: isDescriptionScrollLocked ? geometry.size.height : 450)
                         .padding(.horizontal)