refactor(browse): rename BrowseOpcUaNode* to protocol-agnostic BrowseNode*

Renames BrowseOpcUaNodeCommand/Result -> BrowseNodeCommand/Result and
CommunicationService.BrowseOpcUaNodeAsync -> BrowseNodeAsync across Commons,
Communication, SiteRuntime, DCL actors, and CentralUI. Wire manifest name
follows (BrowseOpcUaNode -> BrowseNode). Browse regression tests green.

src/ZB.MOM.WW.ScadaBridge.Communication/Actors/SiteCommunicationActor.cs

@@ -152,10 +152,10 @@ public class SiteCommunicationActor : ReceiveActor, IWithTimers
         // DataConnectionActor children (which own the live OPC UA sessions)
         // only exist on the singleton's node. The singleton then re-forwards
         // to its own /user/dcl-manager, which DOES have the connection.
-        Receive<BrowseOpcUaNodeCommand>(msg => _deploymentManagerProxy.Forward(msg));
+        Receive<BrowseNodeCommand>(msg => _deploymentManagerProxy.Forward(msg));
 
         // Test Bindings (interactive design-time read) — same routing rationale
-        // as BrowseOpcUaNodeCommand above: the singleton always lands on the
+        // as BrowseNodeCommand above: the singleton always lands on the
         // active site node, which is the node that owns the DataConnectionActor
         // children holding the live OPC UA sessions.
         Receive<ReadTagValuesCommand>(msg => _deploymentManagerProxy.Forward(msg));