patch 8.1.1248: no test for dec mouse

Problem:    No test for dec mouse.
Solution:   Add some tests for dec mouse.  Add "no_query_mouse".
diff --git a/src/version.c b/src/version.c
index f3e646c..70eb2ab 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1248,
+/**/
     1247,
 /**/
     1246,