build: export OpenSSL UI symbols

Node.js compiles them, their existence is indicated by OpenSSL header
defines, but they can't be linked to on Windows because their symbols
are not exported. Export them.

Fixes: https://github.com/nodejs/node/issues/27494

PR-URL: https://github.com/nodejs/node/pull/27586


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>