Run visualization disappears when switching between runs

[elias-ba]

Description

When switching between runs in the history panel, the run visualization sometimes disappears from the diagram.

Steps to reproduce

1. Open a workflow in the collaborative editor
2. Select a run from the history panel
3. Switch between runs with different statuses (e.g., success → crash → success)
4. Observe: run visualization may disappear briefly or go missing

The behavior is flaky.

Related

• Found during review of PR fix: persist run selection across page reload in collaborative editor #4201

cc @doc-han

[theroinaochieng]

Unable to reproduce this issue on v2.15.0-pre6(1.5.52-pre6). Moving it to the backlog in case for further monitoring.