patch 8.2.0282: Vim9: setting number option not tested

Problem:    Vim9: setting number option not tested.
Solution:   Add more tests.   Fix assigning to global variable.
diff --git a/src/version.c b/src/version.c
index d02cf9a..f964607 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    282,
+/**/
     281,
 /**/
     280,