bug#52385: 29.0.50; Doc-View can't view separate pages in separate windows

[Juri Linkov]

> Package: Emacs
> Version: 29.0.50
>
> Try this:
>
>     % emacs -Q some/multi-page.pdf
>     C-x 2
>     n n
>
> You'll see that the `n` changes the page in both windows.
> This was not the case in Emacs<29 where this could be used to view
> different pages of the same PDF in the exact same way we can view
> different "pages" of a text buffer when displayed in several windows.

It seems window-configuration-change-hook is not called
after splitting the window with C-x 2, and thus
image-mode-reapply-winprops is not called from this hook.