refactor: set ignore_incoming_txs in ApplyArgsManOptions

Refactor to consistently use ApplyArgsManOptions to set all PeerManager::Options,
including ignore_incoming_txs.

src/init.cpp

@@ -1540,9 +1540,7 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
     ChainstateManager& chainman = *Assert(node.chainman);
 
 
-    PeerManager::Options peerman_opts{
-        .ignore_incoming_txs = ignores_incoming_txs,
-    };
+    PeerManager::Options peerman_opts{};
     ApplyArgsManOptions(args, peerman_opts);
 
     assert(!node.peerman);

src/node/peerman_args.cpp

@@ -18,6 +18,8 @@ void ApplyArgsManOptions(const ArgsManager& argsman, PeerManager::Options& optio
     }
 
     if (auto value{argsman.GetBoolArg("-capturemessages")}) options.capture_messages = *value;
+
+    if (auto value{argsman.GetBoolArg("-blocksonly")}) options.ignore_incoming_txs = *value;
 }
 
 } // namespace node