Add 'OldCli' flag to additional telemetry properties

Ensures the 'OldCli' flag is set in the AdditionalProperties dictionary within the telemetry context, creating the dictionary if it does not exist. This provides consistent telemetry data for identifying CLI usage.

framework/src/Volo.Abp.Cli/Volo/Abp/Cli/Telemetry/TelemetryCliSessionProvider.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Threading.Tasks;
 using Volo.Abp.DependencyInjection;
@@ -26,6 +27,18 @@ public class TelemetryCliSessionProvider : TelemetryActivityEventEnricher
         context.Current[ActivityPropertyNames.IsFirstSession] = !File.Exists(TelemetryPaths.ActivityStorage);
         context.Current["OldCli"] = true;
         
+        if(context.Current.TryGetValue<Dictionary<string, object>>(ActivityPropertyNames.AdditionalProperties, out var additionalProperties))
+        {
+            additionalProperties["OldCli"] = true;
+        }
+        else
+        {
+            context.Current[ActivityPropertyNames.AdditionalProperties] = new Dictionary<string, object>
+            {
+                { "OldCli", true }
+            };
+        }
+        
         return Task.CompletedTask;
     }
 }