Strange session list resizing when viewing automations

Reported in Slack by mrleemurray: "Strange session list resizing behaviour when viewing automations"

Does this issue occur when all extensions are disabled?: Unknown

- VS Code Version: Unknown
- OS Version: Unknown

Steps to Reproduce:

1. Not provided.
2.

Actual: Session list resizes unexpectedly when viewing automations.

Expected: Session list should remain stable and not resize unexpectedly.

Additional context: Reported in Slack by mrleemurray.

[View original Slack conversation](https://vscodeteam.slack.com/archives/C09MVCZKLP4/p1786545023662709?thread_ts=1786545023.662709&cid=C09MVCZKLP4)