Rename SendMessage to SendZmqMessage.
Summary:
Windows headers define SendMessage as a macro, which leads to problems
with the method name "SendMessage". To circumvent this, we rename the
method to "SendZmqMessage".
This is a backport of core#13686 [5/5]
https://github.com/bitcoin/bitcoin/pull/13686/commits/6fe2ef2acb00b1df7f6a0c0dea1a81a1924be0e1
Depends on D10285
Test Plan: ninja all check-all
Reviewers: #bitcoin_abc, Fabien
Reviewed By: #bitcoin_abc, Fabien
Differential Revision: https://reviews.bitcoinabc.org/D10286