Enable RTTI to fix exception pointer issue on React Native (#1791)

Summary:
Pull Request resolved: #1791

Disabling RTTI for Yoga is causing std::exception to don't work properly in OSS.
Fixes: facebook/react-native#48027

Not sure why we originally disabled RTTI for Yoga, but we have it enable for the whole
React Native build so it probably makes sense to have it enabled for Yoga as well.

Changelog:
[Internal] [Changed] - Enable RTTI to fix exception pointer issue on React Native

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Reviewed By: javache, NickGerleman

Differential Revision: D70386744

fbshipit-source-id: 36e3a1ddb38346d31979d5c1b77d6e9796d6a855

Author: cortinico

cmake/project-defaults.cmake

@@ -19,8 +19,8 @@ add_compile_options(
     # Enable warnings and warnings as errors
     /W4
     /WX
-    # Disable RTTI
-    $<$<COMPILE_LANGUAGE:CXX>:/GR->
+    # Enable RTTI
+    $<$<COMPILE_LANGUAGE:CXX>:/GR>
     # Use /O2 (Maximize Speed)
     $<$<CONFIG:RELEASE>:/O2>)
 
@@ -34,8 +34,8 @@ add_compile_options(
     # Enable warnings and warnings as errors
     -Wall
     -Werror
-    # Disable RTTI
-    $<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>
+    # Enable RTTI
+    $<$<COMPILE_LANGUAGE:CXX>:-frtti>
     # Use -O2 (prioritize speed)
     $<$<CONFIG:RELEASE>:-O2>
     # Enable separate sections per function/data item