patch 8.2.4426: map() function on string and blob does not check types

Problem:    map() function on string and blob does not check argument types at
            compile time.
Solution:   Check string and blob argument types.  Support "0z1234->func()".

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4426,
 /**/
     4425,
 /**/