Replace Tendermint's HTTP client [#3590]
Closes #3590 (closed). Tendermint's HTTP client leaks. Specifically the WebSocket/event support has a supervisor routine that is leaked. So stole Tendermint's HTTP client sans WebSockets.
This is a workaround for https://github.com/cometbft/cometbft/issues/2771.
Changelog: fix
Edited by Ethan Reesor