overlays: declare the right overlay category

* needed for this to work with the new system (for those who use THEME_CUSTOMIZATION_OVERLAY_PACKAGES setting key for storing enabled overlay information) where there are 5 different categories instead of just one like in R.

Signed-off-by: jhonboy121 <alfredmathew05@gmail.com>
Signed-off-by: Joey Huab <joey@evolution-x.org>
30 files changed