bug#67702: 30.0.50; insert-register can no longer be used in minibuffer

[Eli Zaretskii]

> From: Kun Liu <kun.liu@gmail.com>
> Date: Thu, 7 Dec 2023 14:33:33 -0800
> 
> 1) Save some text in register a
> 2) M-x query-replace
> 3) in the minibuffer, type C-x r i
> 4) got error: "byte-code: Command attempted to use minibuffer while in 
> minibuffer"

I guess register-read-with-preview should temporarily bind
enable-recursive-minibuffers to a non-nil value?  Adding Thierry to
the discussion.