corfu: don't suppress popup when evil is disabled

PR #800 caused corfu to be disabled whenever evil wasn't
initialized (eg. in the minibuffer when `evil-want-minibuffer` is nil).
This fixes that.

Amend: #800

Author: 45mg

modes/corfu/evil-collection-corfu.el

@@ -89,7 +89,7 @@ This key theme variable may be refactored in the future so use with caution."
      (const
       :tag "Magic Backspace" magic-backspace))))
 
-(defcustom evil-collection-corfu-supported-states '(insert replace emacs)
+(defcustom evil-collection-corfu-supported-states '(nil insert replace emacs)
   "The `evil-state's which `corfu' function can be requested."
   :type '(repeat symbol))