crypto: make LazyTransform compabile with Streams1

Makes LazyTransform writable by Streams1 by assigning .writable = true
before the actual classes are loaded.

Fixes: https://github.com/nodejs/node/issues/12269
PR-URL: https://github.com/nodejs/node/pull/12380


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>