Clear state if clear autofill data when shutdown. because we won't receive personal-data-changed on shutdown
Clear state if clear autofill data when shutdown.
because we won't receive personal-data-changed on shutdown

fix #4818

Auditors: @bridiver

Test Plan:
1. Add autofill data entries in about:autofill
2. Turn on clear "Autofill data" when closing brave in about:preferences#security
3. Restart brave
4. There shouldn't be anything left in about:autofill

Sh1d0w/browser-laptop,dcposch/browser-laptop,willy-b/browser-laptop,luixxiul/browser-laptop,willy-b/browser-laptop,timborden/browser-laptop,darkdh/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,pmkary/braver,darkdh/browser-laptop,luixxiul/browser-laptop,willy-b/browser-laptop,timborden/browser-laptop,darkdh/browser-laptop,Sh1d0w/browser-laptop,diasdavid/browser-laptop,Sh1d0w/browser-laptop,pmkary/braver,timborden/browser-laptop,pmkary/braver,dcposch/browser-laptop,pmkary/braver,jonathansampson/browser-laptop,jonathansampson/browser-laptop,diasdavid/browser-laptop,jonathansampson/browser-laptop,dcposch/browser-laptop,jonathansampson/browser-laptop,darkdh/browser-laptop,timborden/browser-laptop,dcposch/browser-laptop,Sh1d0w/browser-laptop,willy-b/browser-laptop,diasdavid/browser-laptop