Can´t enable heads up in systemui

[Exedion]

When you see systemui in applications settings, is disable the option for switch heads up, usefull for screenshot notification, low battery notification, open wifi searching notification and others. i see a patch in other repo, here is the link. please fix this

(or add a settings with this patch like addon to get this alternative)

cristianomatos/android_packages_apps_Settings@f626bc7