Fix gray line in video player. Thank you @michael-oberpriller

app/src/main/java/com/futo/platformplayer/views/video/FutoVideoPlayer.kt

@@ -602,6 +602,7 @@ class FutoVideoPlayer : FutoVideoPlayerBase {
             val lp = background.layoutParams as ConstraintLayout.LayoutParams;
             lp.bottomMargin = 0;
             background.layoutParams = lp;
+            _videoView.setBackgroundColor(Color.parseColor("#FF000000"))
 
             gestureControl.hideControls();
             //videoControlsBar.visibility = View.GONE;
@@ -615,6 +616,7 @@ class FutoVideoPlayer : FutoVideoPlayerBase {
             val lp = background.layoutParams as ConstraintLayout.LayoutParams;
             lp.bottomMargin = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 6.0f, Resources.getSystem().displayMetrics).toInt();
             background.layoutParams = lp;
+            _videoView.setBackgroundColor(Color.parseColor("#00000000"))
 
             gestureControl.hideControls();
             //videoControlsBar.visibility = View.VISIBLE;