[Fabric] ShadowProps handling were put behind a feature flag, but now no ComponentViews implement that flag

[jonthysell]

Problem Description

Looking at the RN docs, most of the core components support both border and shadow props.

The change in PR #12287 added CompositionComponentViewFeatures flags to control whether the CompositionBase ComponentView processes border/shadow props for the subclassed ComponentView. The change also set all components to use CompositionComponentViewFeatures::Default, which is Borders only, which was fine, because each individual ComponentView sublclass processed shadows themselves.

However PR #12474 removed all these manual calls to process shadow props in the subclasses, without updating their feature flags to include the shadow props.

Steps To Reproduce

This was seen through static analysis.

Expected Results

No response

CLI version

npx react-native -v

Environment

npx react-native info

Target Platform Version

None

Target Device(s)

Desktop

Visual Studio Version

None

Build Configuration

None

Snack, code example, screenshot, or link to a repository

No response

[chrisglein]

Worth seeing how tests could have caught this. It's possible that snapshots didn't include the shadows, which would explain it. But we want this to break a test.