Peixin Li

### Description app-media-image-capture can't set the track constraints ### Expected outcome Should set the constraints when setting the constraint property. ### Actual outcome Nothing changed when I set constraint property....

*List which issues are fixed by this PR. You must list at least one issue.* Issue: https://github.com/flutter/flutter/issues/144960 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the...

[RFW] Add support to use [null] in switch syntax.

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### Use case Use `null` keyword with [switch] We'd like to render a list of `dogs` which optionally can have `description` data. Remote widgets: ``` widget dogs { selected =...