Don't force init in noninteractive sessions

This allows batch scripts to load $EMACSDIR/init.el to use Doom's API.
Howevever, it puts the onus on the user to run `doom refresh` before
trying to use it.

This also indirectly addresses #2010

init.el

@@ -47,7 +47,7 @@
       nil 'nomessage)
 
 ;; And let 'er rip!
-(doom-initialize noninteractive)
+(doom-initialize)
 (unless noninteractive
   (doom-initialize-core)
   (doom-initialize-modules)