Convert CGFLOAT_MAX to infinity

Summary:
changelog: [internal]

For embedded React Native screens, we need to calculate the intrinsic size. To do that, we need to pass Yoga value `YGUndefined`. However, if available size was `CGFLOAT_MAX` (which is not inifinity), we would pass it to Yoga and it would calculate layout with available height/width `CGFLOAT_MAX`.

To fix this, we convert `CGFLOAT_MAX` to infinity. Which in YogaLayoutableShadowNode gets converted to YGUndefined.

Reviewed By: ShikaSD

Differential Revision: D34719047

fbshipit-source-id: e6fd40724f81abfba164e67efc9ca8fc74e9b235

Author: sammy-SC

React/Fabric/RCTConversions.h

@@ -173,9 +173,17 @@ inline facebook::react::Point RCTPointFromCGPoint(const CGPoint &point)
   return {point.x, point.y};
 }
 
+inline facebook::react::Float RCTFloatFromCGFloat(CGFloat value)
+{
+  if (value == CGFLOAT_MAX) {
+    return std::numeric_limits<facebook::react::Float>::infinity();
+  }
+  return value;
+}
+
 inline facebook::react::Size RCTSizeFromCGSize(const CGSize &size)
 {
-  return {size.width, size.height};
+  return {RCTFloatFromCGFloat(size.width), RCTFloatFromCGFloat(size.height)};
 }
 
 inline facebook::react::Rect RCTRectFromCGRect(const CGRect &rect)