Revert "test: remove test-crypto-keygen flaky designation"

This reverts commit 893c000.

Refs: #48575 (comment)
PR-URL: #48652
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Matthew Aitken <maitken033380023@gmail.com>

Author: lpinca

test/parallel/parallel.status

@@ -7,6 +7,8 @@ prefix parallel
 [true] # This section applies to all platforms
 
 [$system==win32]
+# https://github.com/nodejs/node/issues/41206
+test-crypto-keygen: PASS,FLAKY
 # https://github.com/nodejs/node/issues/41201
 test-fs-rmdir-recursive: PASS, FLAKY
 # https://github.com/nodejs/node/issues/48300