Keep tvOS player controls visible on pause via on-screen button

Route the on-screen play/pause button through handlePlayPause() so it
follows the same visibility and auto-hide timer logic as the Siri Remote
hardware button: timer stops when paused (controls stay pinned) and
restarts on resume.

Yattee/Views/Player/tvOS/TVPlayerView.swift

@@ -232,6 +232,7 @@ struct TVPlayerView: View {
                 onShowComments: { showDetailsPanel(tab: .comments) },
                 onShowDebug: { showDebugOverlay() },
                 onClose: { closeVideo() },
+                onTogglePlayPause: { handlePlayPause() },
                 onScrubbingChanged: { scrubbing in
                     isScrubbing = scrubbing
                     if scrubbing {