bug#30405: 26.0.91; Incorrect apostrophe translation in ImageMagick error message

[Glenn Morris]

Gemini Lasswell wrote:

> When I try to resize an image using an Emacs built without
> ImageMagick, either with emacs -Q or my full config, the apostrophe in
> the error message is not displayed correctly. To reproduce:
>
> C-x C-f path/to/image-file.jpg RET
> +
>
> Result: The error "Can^Yt rescale images without ImageMagick support"
> appears in the echo area.

Present since 25.1. Perhaps a minimal example is:
emacs -Q
(set-buffer-multibyte nil)
(message "can't")