Fix flaky test AutomationList _ drops Target _ Action and When on a narrow list, the name_s hover carrying them (Tasks 7451, 8687)

The merge lane saw `AutomationList _ drops Target _ Action and When on a narrow list, the name_s hover carrying them (Tasks 7451, 8687)` fail and then pass on a rerun of the same tree. - Test: `AutomationList _ drops Target _ Action and When on a narrow list, the name_s hover carrying them (Tasks 7451, 8687)` - Tree: `d9f16ac4d2705fe35baa9a5a42661868cc6fe3f3` - Lane task: 9657 - Flake record: 01a16e79-1fa9-7d54-b587-50166e2a87b0 Make it deterministic; do not delete it unless it tests nothing.

Fixed the flaky test: it read the hover before the project roster loaded. The hover assertion now waits for the roster. Failure reproduced with a 50ms delay; the fix passes under it; 48/48 file tests and quick gate green. PR #6814 queued. Memory: used mem-18304.