Duplicate 'Track B' sign appears over starting grid after race restart

On Volant Station racing, after restarting a race, a 'Track B' sign that is aligned parallel to the track direction incorrectly spawns/appears over the race starting grid area, suggesting a duplicate or misplaced sign actor on restart.

1. Launch the LIVE build: cl82-ue581-siege-lowbie-fix-20260916-r1-eacprotected-resigned.
2. Go to Racing on Volant Station.
3. Start a race and then restart the race.
4. Observe the starting grid area.

No additional signage should appear over the starting grid after a restart; only the correct start-area props/signs should be present and positioned properly.

Incorrect/duplicate sign at the start of the track

Racing Volant Station

Live Version: cl82-ue581-siege-lowbie-fix-20260916-r1-eacprotected-resigned

When restarting a race, the "Track B" sign—positioned parallel to the track's direction—appears over the race starting grid.