Update dotnet/src/Client.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: reachanihere

dotnet/src/Client.cs

@@ -383,9 +383,23 @@ public async Task<CopilotSession> CreateSessionAsync(SessionConfig? config = nul
         session.OnDisposed = (id) =>
         {
             _sessions.TryRemove(id, out _);
-            SessionDestroyed?.Invoke(id);
+            try
+            {
+                SessionDestroyed?.Invoke(id);
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"Exception in SessionDestroyed event handler: {ex}");
+            }
         };
-        SessionCreated?.Invoke(session);
+        try
+        {
+            SessionCreated?.Invoke(session);
+        }
+        catch (Exception ex)
+        {
+            Debug.WriteLine($"Exception in SessionCreated event handler: {ex}");
+        }
 
         return session;
     }