patch 8.2.3279: Vim9: cannot use block in cmdline window

Problem:    Vim9: cannot use block in cmdline window.
Solution:   Add EX_CMDWIN to the CMD_block flags. (closes #8689)
diff --git a/src/version.c b/src/version.c
index f2aae14..69df671 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3279,
+/**/
     3278,
 /**/
     3277,