revert NekoX's BottomSheet style

TMessagesProj/src/main/java/org/telegram/ui/ActionBar/BottomSheet.java

@@ -932,7 +932,7 @@ public class BottomSheet extends Dialog {
         touchSlop = vc.getScaledTouchSlop();
 
         Rect padding = new Rect();
-        shadowDrawable = context.getResources().getDrawable(R.drawable.sheet_shadow_round).mutate();
+        shadowDrawable = context.getResources().getDrawable(R.drawable.sheet_shadow).mutate();
         shadowDrawable.setColorFilter(new PorterDuffColorFilter(getThemedColor(Theme.key_dialogBackground), PorterDuff.Mode.SRC_IN));
         shadowDrawable.getPadding(padding);
         backgroundPaddingLeft = padding.left;