Fix #124771: Allow Back Button When File Browser Loaded in Workspace

If File Browser is opened while embedded into a blender window, as
apposed to opened in a new window, some initialization is not done
and the current directory is not added to the list of previous
folders. Therefore the "back" button cannot bring you back to the
initial folder. This happens if your layout contains a File Browser
editor, like when selecting New / Video Editing. This PR just adds
`ED_fileselect_set_params_from_userdef` to `fileselect_refresh_params`,
which is called from `file_init()`.

Pull Request: https://projects.blender.org/blender/blender/pulls/124827

source/blender/editors/space_file/filesel.cc

@@ -457,6 +457,7 @@ void fileselect_refresh_params(SpaceFile *sfile)
   if (asset_params) {
     fileselect_refresh_asset_params(asset_params);
   }
+  ED_fileselect_set_params_from_userdef(sfile);
 }
 
 bool ED_fileselect_is_file_browser(const SpaceFile *sfile)