NotificationItem:Book Icon Long Sub Headline

Build 26823 on update-every-icon
Reviewing disabled
View Storybook
Baseline History
Build 26823d12dfc4 current baseline
Current build. Accepted by Michael Arestad.
Build 238221e92863
Accepted by Michael Shilman.
Build 194044f4b1ce
Accepted by Norbert de Langen.
Commenting is disabled because there's a newer build on this branch