Run doom-post-init-hook as late as possible

Possibly fixes recursive load errors, to do with
kill-buffer-query-functions and buffer-predicate autoloads loading in a
weird way on Emacs 25 (and especially on MacOS, for some reason).

core/core-modules.el

@@ -56,7 +56,13 @@ non-nil."
                    (load! "config" (plist-get plist :path) t)))
                doom-modules)
       (load! "config" doom-private-dir t)
-      (run-hook-wrapped 'doom-post-init-hook #'doom-try-run-hook))))
+      (if after-init-time
+          (doom|run-post-init-hook)
+        (add-hook 'emacs-startup-hook #'doom|run-post-init-hook)))))
+
+(defun doom|run-post-init-hook ()
+  "Run `doom-post-init-hook'. That's all."
+  (run-hook-wrapped 'doom-post-init-hook #'doom-try-run-hook))
 
 
 ;;