fix bad tab page preview for the first tab set
fix bad tab page preview for the first tab set

fix #11269
Auditors: da39a3ee5e6b4b0d3255bfef95601890afd80709@luixxiul
Test Plan:
npm run test -- --grep="tab pages tab page previews hovering over a tab page changes it"

diasdavid/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,luixxiul/browser-laptop