earlyjs: Reset error handler state after js pipeline fails (#47528)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/47528

After the js pipeline fails to handle the error, reset the hasHandledFatalError var.

Changelog: [Internal]

Reviewed By: sammy-SC

Differential Revision: D65678387

fbshipit-source-id: ac7cd4724954ea78bf33542e208c5f5d3dba5383

packages/react-native/ReactCommon/jserrorhandler/JsErrorHandler.cpp

@@ -244,6 +244,9 @@ void JsErrorHandler::handleError(
           "handleError(): Error raised while reporting using js pipeline. Using c++ pipeline instead.",
           ex,
           error);
+
+      // Re-try reporting using the c++ pipeline
+      _hasHandledFatalError = false;
     }
   }