Fixes context menu not working on tabsbar
Fixes context menu not working on tabsbar

Resolves #9524

Auditors: @bsclifton

Test Plan:
- right click on tabs toolbar (on empty space)
- context menu should open

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