CardPreview:Add Button

Build 6275 on 23-03-ZL-fix-journeys-card-layout
360px
Reviewing disabled
Baseline History
Build 627512909b9
Current build. There are unaccepted changes, so build 5785 is still the baseline.
Build 24002d7bb79
Accepted by Siyang Cao.
Build 233537c0e1d
Accepted by Tataihono Nikora.
Build 2255a6d8700
Auto-accepted
Commenting is disabled because there's a newer build on this branch