Settings: add never sleep screen mode (2/2)

Thanks to kufikugel

https://github.com/temasek/android_packages_apps_Settings/commit/277f3abac0e3f591e5939b90c581551e18ddff26
(cherry picked from commit 58de40f9fb279aba4d84ea776185e54662e15907)
Fix

(cherry picked from commit 9db85e8adad7fb7cffd039ed612b946654deb0f9)