test(web): timeline restore test no longer flakes on a late live-follow save - #22528

Eligibility
This is a narrowly scoped browser-test-only flake fix confined to an ignored path, with no production runtime or product-default changes. Its impact is limited to test execution.

Notes:
No code owners found in target merge base 5bcc90e

Agent Credits: 30 credits
Approvability runs at a flat rate of 30 credits whenever the agent is asked for a verdict.