Picker:Is Clearable

Build 2445 on feat-value-mods
Reviewing disabled
Baseline History
Build 24454b144a8
Current build. There are unaccepted changes, so build 2427 is still the baseline.
Build 2427e3bbd7e current baseline
Accepted by Andrey Yamanov.
Build 23675f625b5
Auto-accepted
Commenting is disabled because there's a newer build on this branch