bug#47969: 28.0.50; Losing minibuffer focus in trying M-x command

[martin rudalics]

> Okay, I bisected this, and the culprit is commit 3fdd3bb56c. Interestingly, 
that commit removed the following from handle-select-window:
>
> ;; Don't switch if we're currently in the minibuffer.
> ;; This tries to work around problems where the
> ;; minibuffer gets unselected unexpectedly, and where
> ;; you then have to move your mouse all the way down to
> ;; the minibuffer to select it.
> (window-minibuffer-p)
>
> which happens to be what my patch adds again.

I can't give a reasonable explanation why I removed that back then, so
please re-add it as soon as your paperwork is done.

And many thanks for the bisection, great work as usual.

martin