message: rpc: sendrawtransaction unconditionality/privacy note
  In sendrawtransaction RPCHelpMan, mention unconditionality and privacy
  as per
  Thank you to MarcoFalke and laanwj for their review and suggestions.
diff: @@ -760,7 +760,10 @@ static UniValue signrawtransactionwithkey(const JSONRPCRequest& request)
  static UniValue sendrawtransaction(const JSONRPCRequest& request)
  {
  RPCHelpMan{"sendrawtransaction",
  - "\nSubmits raw transaction (serialized, hex-encoded) to local node and network.\n"
  + "\nSubmit a raw transaction (serialized, hex-encoded) to local node and network.\n"
  + "\nNote that the transaction will be sent unconditionally to all peers, so using this\n"
  + "for manual rebroadcast may degrade privacy by leaking the transaction's origin, as\n"
  + "nodes will normally not rebroadcast non-wallet transactions already in their mempool.\n"
  "\nAlso see createrawtransaction and signrawtransactionwithkey calls.\n",
  {
  {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex string of the raw transaction"},
  