patch 8.1.1274: after :unmenu can still execute the menu with :emenu

Problem:    After :unmenu can still execute the menu with :emenu.
Solution:   Do not execute a menu that was disabled for the specified mode.
diff --git a/src/version.c b/src/version.c
index c8038f3..a2e2397 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1274,
+/**/
     1273,
 /**/
     1272,