Enable certificate error assistant

[jumde]

Description

Certificate error assistant is currently not installed in brave. This component presents special interstitial pages for pages like mitm-software or captive-portal.

[mherrmann]

Similar to #12999: At the moment, Certificate Error Assistant appears in brave://components as version 0.0.0.0 and stays this way forever. My fix for #8709 will actually remove this zombie appearance. But whoever implements this present issue to bring it back can simply look at my fix and remove Certificate Error Assistant (ID giekcmmlnklenlaomppkphknjmnnpneh) from the list of blacklisted components.