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Samuel Susla
79adce3942
Summary: Pull Request resolved: https://github.com/react/react-native/pull/57226 This removes the experimental `enableImageRequestDowngradingForNonVisibleImages` feature flag and backs out the behavior it gated. When enabled, `ImageShadowNode` downgraded image requests to prefetch priority for images that layout determined did not intersect the viewport — threading an `ImageRequestPriority` through `ImageRequestParams` and the Apple image managers, and propagating per-node viewport frames during Yoga layout via `experimental_layoutOrigin`/`experimental_layoutFrame` on `LayoutContext`. The flag defaulted to off and was never enabled in a release, and the gated behavior did not deliver the expected improvement, so the feature is removed entirely: `<Image>` once again always requests at immediate priority. This deletes the feature flag, the `ImageRequestPriority` enum and the `ImageRequestParams::priority` field, the priority parameter on `RCTImageManager`/`RCTSyncImageManager`/`RCTImageManagerProtocol`, the `experimental_layout*` `LayoutContext` fields and their Yoga propagation, the iOS request-priority debug overlay, and the associated Fantom test scaffolding. The generated feature-flag sources and the C++ API snapshots are regenerated accordingly. Changelog: [Internal] Reviewed By: javache Differential Revision: D108411690 fbshipit-source-id: 1538ec699ed2857f3d3154d666fac43a1dc64cd1