bug#62427: tab-bar-new-tab-to now handles cases with multiple side-windows

[Juri Linkov]

>> Then creating a new tab fails with such error:
>>
>> Debugger entered--Lisp error: (error "Specified root is not an ancestor of 
>> specified window")
>
> Sure, I would be happy to investigate the problem! Is there a way to
> reproduce this bug? I've personally never seen it before.

Sorry, this bug is not reproducible.  It comes out of the blue.
And has such consequences that there is no recursive edit,
but you still can switch to the minibuffer window that has no prompt
with 'C-x o'.

>> Sometimes the window configuration gets into such inconsistent state
>> that the minibuffer window remains on the window list while the
>> minibuffer is not active.  Then creating a new tab fails with
>> such error:
>>
>> Debugger entered--Lisp error: (error "Specified root is not an ancestor of 
>> specified window")
>>   delete-other-windows-internal(#<window 4 on  *Minibuf-1*> #<window 5 on 
>> *scratch*>)
>>   delete-other-windows()
>>   tab-bar-new-tab-to()
>>   tab-bar-new-tab()