Timeline columns improvements

There are two QOL improvement suggestions for columns in timeline.

First, I recommend erasing “No Matte” & “None” from Track Matte and Parent columns so it will be much easier to search for dependencies when working with A LOT of layers.

Secondly, in the Layer Switches panel there's a small gap at the end of it which also can be resized but doesn't make anything wider aside from the gap. It's common when you switch between devices (PC, laptop) and these columns appear in different sizes on the same project, so you have to always adjust it so it doesn't take up necessary space from the timeline.