MDEV-27964: A better work-around

Already the detection part of have_crypt.inc must be skipped
in WITH_MSAN builds until the SIGSEGV in the crypt() interceptor
has been fixed.

mysql-test/include/have_crypt.inc

+# MDEV-27964 The function ENCRYPT() causes SIGSEGV in WITH_MSAN builds
+-- source include/not_msan.inc
 # encrypt('a') is NULL if crypt(3) is not available
 # encrypt('a') is "*0" in fips mode
 if (`select length(encrypt('a')) > 3 IS NOT TRUE`) {

mysql-test/main/func_crypt.test

 -- source include/have_crypt.inc
-# MDEV-27964 The function ENCRYPT() causes SIGSEGV in WITH_MSAN builds
--- source include/not_msan.inc
 
 --disable_warnings
 drop table if exists t1;