Fix: Skip flowchart-specific processing for non-direct child activities

Co-authored-by: sfmskywalker <938393+sfmskywalker@users.noreply.github.com>

Author: Copilot

src/modules/Elsa.Workflows.Core/Activities/Flowchart/Activities/Flowchart.Counters.cs

@@ -138,6 +138,18 @@ private async ValueTask ProcessChildCompletedAsync(ActivityExecutionContext flow
             return;
         }
 
+        // Check if the completed activity is a direct child of this flowchart.
+        // If not, skip flowchart-specific processing as the activity is managed by an intermediate container (e.g., sub-process).
+        var isDirectChild = completedActivityContext.ParentActivityExecutionContext == flowchartContext;
+        
+        if (!isDirectChild)
+        {
+            // The activity is not a direct child, so we don't process its outbound connections.
+            // Instead, just check if the flowchart should complete.
+            await CompleteIfNoPendingWorkAsync(flowchartContext);
+            return;
+        }
+
         // Schedule the outbound activities
         var flowGraph = GetFlowGraph(flowchartContext);
         var flowScope = GetFlowScope(flowchartContext);

src/modules/Elsa.Workflows.Core/Activities/Flowchart/Activities/Flowchart.Tokens.cs

@@ -13,6 +13,7 @@ private async ValueTask OnChildCompletedTokenBasedLogicAsync(ActivityCompletedCo
     {
         var flowContext = ctx.TargetContext;
         var completedActivity = ctx.ChildContext.Activity;
+        var completedActivityContext = ctx.ChildContext;
         var flowGraph = flowContext.GetFlowGraph();
         var tokens = GetTokenList(flowContext);
 
@@ -24,6 +25,22 @@ private async ValueTask OnChildCompletedTokenBasedLogicAsync(ActivityCompletedCo
             return;
         }
 
+        // Check if the completed activity is a direct child of this flowchart.
+        // If not, skip flowchart-specific processing as the activity is managed by an intermediate container (e.g., sub-process).
+        var isDirectChild = completedActivityContext.ParentActivityExecutionContext == flowContext;
+        
+        if (!isDirectChild)
+        {
+            // The activity is not a direct child, so we don't process its tokens.
+            // Instead, just check if the flowchart should complete.
+            if (!flowContext.HasPendingWork())
+            {
+                tokens.Clear();
+                await flowContext.CompleteActivityAsync();
+            }
+            return;
+        }
+
         // Emit tokens for active outcomes.
         var outcomes = (ctx.Result as Outcomes ?? Outcomes.Default).Names;
         var outboundConnections = flowGraph.GetOutboundConnections(completedActivity);