MINOR: ssl: report FIPS mode in -vv for OpenSSL >= 3.0 too

MINOR: ssl: report FIPS mode in -vv for OpenSSL >= 3.0 too

The "SSL library FIPS mode" line in "haproxy -vv" was only computed
for SSL libraries implementing the legacy FIPS_mode() API (OpenSSL
1.0.x/1.1.x and compatible libraries such as AWS-LC), and silently
omitted for OpenSSL 3.0 and above.

Use the openssl_fips_mode() helper introduced for the fips_mode()
config condition predicate instead of calling FIPS_mode() directly:
it also covers OpenSSL >= 3.0 via
EVP_default_properties_is_fips_enabled(), and reports "no" rather
than omitting the line entirely for any SSL library supporting
neither API. The line is now unconditionally printed.