Try initializing the Gnus registry earlier

Somethings restarting Gnus results in many error messages whether the
`gnus-registry` seems to be nil.  Maybe initializing the registry earlier helps?

init.el

@@ -1858,9 +1858,9 @@
             ;; Use Gnus’ registry; doing this too early conflicts with `gnus'
             ;; calling `gnus-shutdown', which in turn calls
             ;; `gnus-registry-clear', leaving us with an empty registry upon
-            ;; startup.  So let's call this initialization right after startup,
+            ;; startup.  So let's call this initialization right before startup,
             ;; that should be fine.
-            (add-hook 'gnus-started-hook
+            (add-hook 'gnus-before-startup-hook
                       #'gnus-registry-initialize)
 
             ;; Automatic encryption if all necessary keys are present