* Replace wait_until with assert_equal where possible
* Use send_and_ping helper where possible
This is a backport of [[https://github.com/bitcoin/bitcoin/pull/22311 | core#22311]] [3/4]
https://github.com/bitcoin/bitcoin/pull/22311/commits/faa211fc6e3d4984b8edff1d762dd4cba205d982
Depends on D11444