Fabric: Fixes TextInput crash when textShadowOffset is set and textSh…

…adowRadius is nan (facebook#48296)

Summary:
Fixes facebook#48288

## Changelog:

[IOS] [FIXED] - Fabric: Fixes TextInput crash when textShadowOffset is set and textShadowRadius is nan

Pull Request resolved: facebook#48296

Test Plan: Repro demo in facebook#48288

Reviewed By: cipolleschi

Differential Revision: D67334179

Pulled By: NickGerleman

fbshipit-source-id: a9456a152d31bef1666669cbded28d99ec8a2028

packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/ios/react/renderer/textlayoutmanager/RCTAttributedTextUtils.mm

@@ -303,8 +303,12 @@ inline static CGFloat RCTEffectiveFontSizeMultiplierFromTextAttributes(const Tex
     auto textShadowOffset = textAttributes.textShadowOffset.value();
     NSShadow *shadow = [NSShadow new];
     shadow.shadowOffset = CGSize{textShadowOffset.width, textShadowOffset.height};
-    shadow.shadowBlurRadius = textAttributes.textShadowRadius;
-    shadow.shadowColor = RCTUIColorFromSharedColor(textAttributes.textShadowColor);
+    if (!isnan(textAttributes.textShadowRadius)) {
+      shadow.shadowBlurRadius = textAttributes.textShadowRadius;
+    }
+    if (textAttributes.textShadowColor) {
+      shadow.shadowColor = RCTUIColorFromSharedColor(textAttributes.textShadowColor);
+    }
     attributes[NSShadowAttributeName] = shadow;
   }