Add "EarlyJsError: " as prefix of early js error's message

Summary:
Changelog:
[General][Changed] - Add "EarlyJsError: " as prefix of early js error's message

Reviewed By: RSNara

Differential Revision: D40484148

fbshipit-source-id: 4c8f9b4a35c7547365bd70dff7627a08a0e6bc4b

ReactCommon/jserrorhandler/JsErrorHandler.cpp

@@ -82,7 +82,7 @@ parseErrorStack(const jsi::JSError &error, bool isFatal, bool isHermes) {
     }
   }
   errorObj.putMapBufferList(kAllStackFrames, std::move(frames));
-  errorObj.putString(kErrorMessage, error.getMessage());
+  errorObj.putString(kErrorMessage, "EarlyJsError: " + error.getMessage());
   // TODO: If needed, can increment exceptionId by 1 each time
   errorObj.putInt(kExceptionId, 0);
   errorObj.putBool(kIsFatal, isFatal);