patch 8.2.4800: missing test update for adjusted t_8u behavior

Problem:    Missing test update for adjusted t_8u behavior.
Solution:   Update and extend the test.
diff --git a/src/version.c b/src/version.c
index 447bbd8..4c19455 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4800,
+/**/
     4799,
 /**/
     4798,