MDEV-9493 --tc-heuristic-recover option values off by one

fix typelib to match defines:
#define TC_HEURISTIC_RECOVER_COMMIT   1
#define TC_HEURISTIC_RECOVER_ROLLBACK 2

mysql-test/r/mysqld--help.result

@@ -1091,7 +1091,7 @@ sysdate-is-now FALSE
 table-cache 400
 table-definition-cache 400
 table-open-cache 400
-tc-heuristic-recover COMMIT
+tc-heuristic-recover OFF
 thread-cache-size 0
 thread-stack 294912
 time-format %H:%i:%s

sql/mysqld.cc

@@ -279,7 +279,7 @@ const char *show_comp_option_name[]= {"YES", "NO", "DISABLED"};
 
 static const char *tc_heuristic_recover_names[]=
 {
-  "COMMIT", "ROLLBACK", NullS
+  "OFF", "COMMIT", "ROLLBACK", NullS
 };
 static TYPELIB tc_heuristic_recover_typelib=
 {