[backport#15894 3/3] Make AbortNode() aware of MSG_NOPREFIX flag

Summary:
https://github.com/bitcoin/bitcoin/pull/15894/commits/f724f31401b963c75bd64f5e2c5b9d9561a9a9dd

Depends on D7125

Concludes backport of Core PR15894

Test Plan:

ninja check check-functional

Reviewers: #bitcoin_abc, jasonbcox

Reviewed By: #bitcoin_abc, jasonbcox

Differential Revision: https://reviews.bitcoinabc.org/D7126