Agents - there is a "gap" in the twistie when rendering chats in the sessions list

[lszomoru]

Testing #333433

[sandy081]

Ladislau Szomoru (@lszomoru) Just confirming the intended issue: is the problem the visible break between the parent session’s vertical hierarchy guide and the child chat’s L-shaped connector, rather than spacing around the expand/collapse twistie itself? The screenshot appears to show the navigation guide ending and restarting with a gap.