Fix conditional cards disappeared from contextual homepage

This symptom only occurred in the case of more than 3 conditional cards
and no suggestion cards in homepage. It is caused by incompletely keeping
conditional cards. So adding missing card types makes conditional cards
be kept correctly.

Bug: 120115919
Test: robotest
Change-Id: Ic67c0a813de4f966c164bf92e4d4d64debcf95be