bug#68235: 29.1.90; Switching tabs stops following process output in selected window

[Juri Linkov <juri@linkov.net>]

> Thanks, this is much more clear now.  I suggest a slight rewording:
>
>     Function called when selecting a tab to handle windows whose buffer was killed.
>   When a tab-bar tab displays a window whose buffer was killed since
>   this tab was last selected, this function determines what to do with
>   that window.
>
>> +(defun tab-bar-select-keep-windows (_frame windows)
>> +  "Display a placeholder buffer in the window with killed buffer.
>                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> "...in the window whose buffer was killed."
>
>> +A button allows to restore a killed file buffer."
>
> "A button in the window allows to restore the killed buffer, if
> it was visiting a file."

So now the patch is pushed with these changes.