Merge bitcoin/bitcoin#23750: rpcwallet: mention labels are disabled for ranged descriptors

65efbba45d rpcwallet: mention labels are deactivated for ranged descriptors (Antoine Poinsot)

Pull request description:

  It was confusing when trying to use it as a blackbox. So mention it so next ones don't have to open the said box :)

  See #23749 for context

ACKs for top commit:
  Sjors:
    utACK 65efbba45d
  achow101:
    ACK 65efbba45d

Tree-SHA512: d8a3d1f81c16d95855ac2b01e8fd20e83d6dac1721b3da464a9a890e46102992a6882918be87b2a28b929349ee7f1beb1af6c88b22f065fbbb6948275a6d2b8f

src/wallet/rpc/backup.cpp

@@ -1595,7 +1595,7 @@ RPCHelpMan importdescriptors()
                                         /* oneline_description */ "", {"timestamp | \"now\"", "integer / string"}
                                     },
                                     {"internal", RPCArg::Type::BOOL, RPCArg::Default{false}, "Whether matching outputs should be treated as not incoming payments (e.g. change)"},
-                                    {"label", RPCArg::Type::STR, RPCArg::Default{""}, "Label to assign to the address, only allowed with internal=false"},
+                                    {"label", RPCArg::Type::STR, RPCArg::Default{""}, "Label to assign to the address, only allowed with internal=false. Disabled for ranged descriptors"},
                                 },
                             },
                         },