build: avoid using CMP for BZ2File

Some Python distributions do not support
context manager protocol (CMP) for BZ2File.

PR-URL: https://github.com/nodejs/node/pull/31198


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Christian Clauss <cclauss@me.com>