Layout:Flex Sub Component

Build 3055 on feat-new-notifications
Reviewing disabled
The baseline is taller than the new snapshot (1200x900 to 1200x300).
Baseline History
Build 305582f55d4
Current build. There are unaccepted changes, so build 2752 is still the baseline.
Build 275208ed3c8 current baseline
Accepted by Andrey Yamanov.
Build 2586091e7e4
Accepted by Andrey Yamanov.
Build 2584717151f
Accepted by Andrey Yamanov.
Build 2582f5ed0c0
Auto-accepted
Commenting is disabled because there's a newer build on this branch