UI: Theme Versioning for Enum Highlighting

Theme versioning to ListItem InnerSel required for highlighting
the selected Enum value from #111074.

Pull Request: https://projects.blender.org/blender/blender/pulls/111819

source/blender/blenloader/intern/versioning_userdef.cc

@@ -124,6 +124,7 @@ static void do_versions_theme(const UserDef *userdef, bTheme *btheme)
   {
     /* Keep this block, even when empty. */
     FROM_DEFAULT_V4_UCHAR(space_sequencer.transition);
+    FROM_DEFAULT_V4_UCHAR(tui.wcol_list_item.inner_sel);
   }
 
 #undef FROM_DEFAULT_V4_UCHAR