patch 8.1.1288: search stats don't show for mapped command

Problem:    Search stats don't show for mapped command.
Solution:   Remove SEARCH_PEEK from searchit flags.  Add a test. (Christian
            Brabandt)
diff --git a/src/version.c b/src/version.c
index e2ca5b0..fb1235c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1288,
+/**/
     1287,
 /**/
     1286,