Fix quantization of pasted notes

Fixes a regression caused by #4058

src/gui/editors/PianoRoll.cpp

@@ -3757,7 +3757,7 @@ void PianoRoll::pasteNotes()
 			// create the note
 			Note cur_note;
 			cur_note.restoreState( list.item( i ).toElement() );
-			cur_note.setPos( cur_note.pos() + m_timeLine->pos() );
+			cur_note.setPos( cur_note.pos() + Note::quantized( m_timeLine->pos(), quantization() ) );
 
 			// select it
 			cur_note.setSelected( true );