Failed "eventAction: artifact" disappears from the trace after browser refresh.

**Describe the bug**
This problem is related to the main bug submitted as #3291.

After getting the described error

it becomes visible in the trace, as can be seen in the screenshot:

After refreshing the page or moving back and forth to a different session, the error event disappears from the trace:

**Expected behavior**
Trace shouldn't change or lose events when I move between sessions or refresh the browser window.

**Desktop (please complete the following information):**
- OS: Ubuntu
- Python version(python -V): 3.13.9
- ADK version(pip show google-adk): v1.17.0

**Model Information:**
- Are you using LiteLLM: No
- Which model is being used: gemini-2.5-flash