bug#37699: global-tab-line-mode and dired "*Marked Files*" buffer

[Juri Linkov]

>>> Steps to reproduce:
>>>
>>> 0. emacs -Q
>>> 1. M-x dired RET RET
>>> 2. M-x global-tab-line-mode
>>> 2. Mark some files using "m"
>>> 3. Type some command e.g. "!"
>>>
>>> Result: There are tabs in the window showing the "*Marked Files*" buffer.
>>>
>>> There should be no tabs in this window.  I believe the function
>>> dired-mark-pop-up is where we show the marked files.
>>
>> I propose the following patch:
>
> This is pushed now.  Please confirm if everything is right before closing.

Now pushed a better fix to set tab-line-exclude to nil
(instead of setting tab-line-format).