p2p: clean up Misbehaving()

Summary:

This PR makes a few minor clean-ups to Misbehaving() in preparation to
move it out of the cs_main lock.

There are very minor logging changes but otherwise no functional
changes.

Backport of core PR19583.

Depends on D8792.

Some of our Misbehaving messages are updated to match core messages.

Test Plan:

ninja all check-all

Reviewers: #bitcoin_abc, majcosta

Reviewed By: #bitcoin_abc, majcosta

Subscribers: majcosta

Differential Revision: https://reviews.bitcoinabc.org/D8793