[JSCRuntime] Only enable the JSC debugging in DEBUG by default (#1979)

Author: Saadnajmi

React/CxxBridge/JSCExecutorFactory.h

@@ -31,7 +31,11 @@ class JSCExecutorFactory : public JSExecutorFactory {
   JSIExecutor::RuntimeInstaller runtimeInstaller_;
 
   // [macOS
+#if DEBUG
   bool enableDebugger_ = true;
+#else
+  bool enableDebugger_ = false;
+#endif
   std::string debuggerName_ = "JSC React Native";
   // macOS]
 };