added option for enabling notification env macros even if lit are enabled

if large installation tweaks is enabled ( which is required for performance reasons in our case ) the environment macros for check and notification commands are disabled. 

But we noticed that a performance issue only shows up if the macros for check commands are enabled.

Enabling these macros for notifications is really useful feature. So we added an extra option ( `use_large_installation_tweaks_notification_macros` ) to enable env macros for notifications even if large installation tweaks are enabled