[COMCTL32+????] Addendum to CORE-16722 improve drawing speed of hidden files by preventing double-drawing

Reported against 0.4.15-dev-7907-g95bf896 GCC8.4.0dbg x86.

In CORE-16722 we fixed that we now no longer have to maximize the filebrowser window to force an explicit refresh to see the hidden files like C:\RECYCLER in transparent color in explorer filebrowser.
That works.

But I do have the feeling that what we committed in
0.4.15-dev-6773-g855008d was a workaround/hackfix just, because if you have a computer that is a bit slower, you can clearly see that it first draws those elements untransparent (like every other regular file) and only then after some milliseconds and after all other files were painted already, it repaints them in the transparent style.

The request of this ticket to prevent that double-drawing and draw them right away in transparent style.
That will also speed up the file-browser a bit in such situations.