src: fix warning on mismatched fn signature

Add the missing `void* priv` to node_report's Initialize().

PR-URL: https://github.com/nodejs/node/pull/26950


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>