Don't have cards auto-filled in the foreground when a card gets dismissed.

Currently if users dismiss a card or navigate back to the homepage,
new suggestions will be auto filled in. We should only add new cards
upon next visit.

Also fix suggestion cards undismissable problem.

Fixes: 121175037
Bug: 120628661
Test: robotests
Change-Id: I01d74aaaa21c8408e5cecafef04a7d52c97bccc5