nyxt: Enable custom bindings in VI insert mode and CUA scheme.

.config/nyxt/init.lisp

@@ -44,6 +44,7 @@
 (define-mode my-mode ()
   "Dummy mode for the custom key bindings in `*my-keymap*'."
   ((keymap-scheme (keymap:make-scheme
+                   scheme:cua *my-keymap*
                    scheme:emacs *my-keymap*
                    scheme:vi-normal *my-keymap*))))