Fix #113683: Wrong colors in UIList items after importing 3.6 theme

Theme changes for active/hover elements in 4.0 were missing versioning.

source/blender/blenkernel/BKE_blender_version.h

@@ -29,7 +29,7 @@ extern "C" {
 
 /* Blender file format version. */
 #define BLENDER_FILE_VERSION BLENDER_VERSION
-#define BLENDER_FILE_SUBVERSION 34
+#define BLENDER_FILE_SUBVERSION 35
 
 /* Minimum Blender version that supports reading file written with the current
  * version. Older Blender versions will test this and cancel loading the file, showing a warning to

source/blender/blenloader/intern/versioning_userdef.cc

@@ -129,6 +129,10 @@ static void do_versions_theme(const UserDef *userdef, bTheme *btheme)
     FROM_DEFAULT_V4_UCHAR(space_sequencer.transition);
   }
 
+  if (!USER_VERSION_ATLEAST(400, 35)) {
+    memcpy(btheme, &U_theme_default, sizeof(*btheme));
+  }
+
   /**
    * Versioning code until next subversion bump goes here.
    *