Remove native optionality (#48653)

Summary:
Pull Request resolved: #48653

Changelog:
[General][Changed] - Mark intersectionRect required in NativeIntersectionObserverEntry

Reviewed By: rubennorte

Differential Revision: D68120751

fbshipit-source-id: 196b3d48cf33721031a0c2a9fa0a55d250926cbe

packages/react-native/ReactCommon/react/nativemodule/intersectionobserver/NativeIntersectionObserver.h

@@ -45,7 +45,7 @@ using NativeIntersectionObserverEntry =
         // rootRect
         RectAsTuple,
         // intersectionRect
-        std::optional<RectAsTuple>,
+        RectAsTuple,
         // isIntersectingAboveThresholds
         bool,
         // time