Highlight the currently selected instrument/automation patterns in the s...

Often times, I work in a way where I have many identical copies of a pattern/automation next to each other, and I need to edit one of them to make some variations in it. Sometimes I get distracted and when I come back to it, I have no idea which of those identical patterns I have selected in the editor. Sometimes I end up editing the wrong one and have to switch the order around.

This update makes it so that if a pattern is opened in the piano roll or automation editor, that pattern is highlighted in the song editor with thicker/brighter borders. I chose borders because it is unintrusive yet noticeable enough to be of use.