ELPACA: Wait until use-package integration fully loaded

Stolen from github:
https://github.com/progfolio/elpaca/issues/236

If the maintainer does it, it probably is needed.

config.org

@@ -56,6 +56,9 @@
   ;; Enable use-package :ensure support for Elpaca.
   (elpaca-use-package-mode)
   )
+
+;; wait to get elpaca use-package integration
+(elpaca-wait)
 #+end_src
 
 * General config