Merge bitcoin/bitcoin#28136: refactor: move GetServicesNames from rpc/util.{h,cpp} to rpc/net.cpp

bbb68ffdbd refactor: drop protocol.h include header in rpc/util.h (Jon Atack)
1dd62c5295 refactor: move GetServicesNames from rpc/util.{h,cpp} to rpc/net.cpp (Jon Atack)

Pull request description:

  Move `GetServicesNames()` from `rpc/util` to `rpc/net.cpp`, as it is only called from that compilation unit and there is no reason for other ones to need it.

  Remove the `protocol.h` include in `rpc/util.h`, as it was only needed for `GetServicesNames()`, drop an unneeded forward declaration (the other IWYU suggestions would require more extensive changes in other files), and add 3 already-missing include headers in other translation units that are needed to compile without `protocol.h` in `rpc/util.h`, as `protocol.h` includes `netaddress.h`, which in turn includes `util/strencodings.h`.

ACKs for top commit:
  kevkevinpal:
    lgtm ACK [bbb68ff](bbb68ffdbd)
  ns-xvrn:
    ACK bbb68ff
  achow101:
    ACK bbb68ffdbd

Tree-SHA512: fcbe195874dd4aa9e86548685b6b28595a2c46f9869b79b6e2b3835f76b49cab4bef6a59c8ad6428063a41b7bb6f687229b06ea614fbd103e0531104af7de55d

src/rpc/util.cpp

@@ -1304,17 +1304,6 @@ std::vector<CScript> EvalDescriptorStringOrObject(const UniValue& scanobject, Fl
     return ret;
 }
 
-UniValue GetServicesNames(ServiceFlags services)
-{
-    UniValue servicesNames(UniValue::VARR);
-
-    for (const auto& flag : serviceFlagsToStr(services)) {
-        servicesNames.push_back(flag);
-    }
-
-    return servicesNames;
-}
-
 /** Convert a vector of bilingual strings to a UniValue::VARR containing their original untranslated values. */
 [[nodiscard]] static UniValue BilingualStringsToUniValue(const std::vector<bilingual_str>& bilingual_strings)
 {