[TSS][cs-6.40]: Node and Server Use json.MarshalIndent in Wire Formats Minor

[abelliumnt]

Describe the bug

json.MarshalIndent adds indents to the serialized json struct which unnecessarily increases the size of the message on the wire.

tss/ws/server/handler.go:L497-L503

case msg := <-wsc.requestChan:
	wsc.Logger.Info("send msg from requestChan to target client", "method", msg.Method)
	jsonBytes, err := json.MarshalIndent(msg, "", "  ")
	if err != nil {
		wsc.Logger.Error("Failed to marshal RPCRequest to JSON", "err", err)
		continue
	}

tss/node/server/http.go:L189-L195

jsonResult, err := json.MarshalIndent(signResp, "", "	")
if err != nil {
	hs.logger.Error().Err(err).Msg("fail to marshal response to json message")
	w.WriteHeader(http.StatusInternalServerError)
	return
}

Expected behavior
To enhance the efficiency of message transmission, it’s recommended to replace json.MarshalIndent with json.Marshal. Moreover, a switch to a more efficient wire format, such as a binary one, could significantly improve data transmission efficiency.