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

[martin rudalics]

> Patch attached.  Could you please test it, and confirm that it correctly 
fixes the issue?
>
> Cc'ing Martin, who authored most of the handle-select-window function. The 
recipe is upthread.

I don't know what to say because (1) moving the mouse to the lower
window does _not_ lead to typing "gnus" in that window here and (2) I'd
rather consider it a bug to _not_ select the lower window in that case.

Mouse window auto-selection should mimic the behavior of clicking into
the lower window and clicking in that window should select it also while
a minibuffer dialogue goes on.  Recall that such dialogues are not modal
as has been constated a number of times on this list.

Note also that normally I have my minibuffer in a child frame and even
there no auto-selection takes place when the minibuffer is active
despite of the fact that I have set both WM focus-follows-mouse and
`mouse-autoselect-window'.

But I have no strong opinion so I leave it to Robert to propose what
should be done here.

martin