devel/apr1: Unbreak with MySQL > 8.0.2 < 10.0.0

my_init() was removed from mysql 8.0.2, but dbd/apr_dbd_mysql.c calls
my_init() if MYSQL_VERSION_ID < 100000. This patch fixes this problem,
allowing Apache mod_authn_dbd.so to work properly on mysql >= 8.0.2.

There is an open bug upstream, but it has not been patched yet.

Upstream PR: https://bz.apache.org/bugzilla/show_bug.cgi?id=62631

PR: 274134
Approved by: brnrd (with apache hat)