Non-Renderer components aren't receiving shaders from bundles

[hedgehog1029]

The Mac shader loader currently only applies loaded shaders to Renderer components:

TrombLoader/CustomTracks/Backgrounds/CustomBackground.cs

Line 245 in a75aed9

foreach (var renderer in bg.GetComponentsInChildren<Renderer>(true))

However, other components such as TextMeshProGUI and Graphic are not being queried here.

[hedgehog1029]

There's a remaining issue with the text underlay shader not working, but I'm going to delay that fix to a point release as it'll require some debugging.