crypto: downgrade DEP0115 to `--pending-deprecation` only

Aliases are very cheap to maintain, so an unconditional runtime
deprecation that affects existing ecosystem code is not
a good idea. This commit turns the runtime deprecation into
a `--pending-deprecation` one.

Fixes: https://github.com/nodejs/node/issues/23013

PR-URL: https://github.com/nodejs/node/pull/23017


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>