patch 8.2.3166: Vim9: nested autoload call error overruled by "Unknown error"

Problem:    Vim9: nested autoload call error overruled by "Unknown error".
Solution:   Check need_rethrow before giving an "Unknown error".
            (closes #8568)

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3166,
 /**/
     3165,
 /**/