4.0.3

[Feature][iOS] Adapt Lynx to resizable windows

- Add per-view screen and viewport metrics and migrate runtime, renderer, keyboard, overlay, scrolling, and XElement consumers away from global screen assumptions.
- Scope lifecycle handling to the owning window scene and propagate per-view scale through the animation runtime.
- Update iOS APIs and targeted tests for resizable window behavior.
- Bridge the shared screen-metrics protocol methods through the existing macOS and tvOS update paths.

TEST: Generated the CQ macOS GN configuration and built the LynxTemplateRender object target.

AutoSubmit: true

SkipChecks: macro,pod-header-reference