Fix ASN1_TYPE_get/set with type=V_ASN1_BOOLEAN

BOOLEAN does not have valid data in the value.ptr member,
thus don't use it here.

Fixes #9276

[extended tests]

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9278)

(cherry picked from commit 6335f837cfa7eaf1202f2557bf2ba148987226e7)