Fix crash when invoking destructor from other threads than JS (#679)

Author: j-piasecki

android/src/main/new_arch/react/renderer/components/RNLiveMarkdownSpec/MarkdownTextInputDecoratorShadowNode.cpp

@@ -3,6 +3,7 @@
 #include <fbjni/fbjni.h>
 #include <react/fabric/JFabricUIManager.h>
 #include <react/jni/ReadableNativeMap.h>
+#include <react/jni/SafeReleaseJniRef.h>
 #include <react/renderer/components/view/conversions.h>
 #include <react/renderer/core/ComponentDescriptor.h>
 #include <yoga/Yoga.h>
@@ -45,9 +46,9 @@ void MarkdownTextInputDecoratorShadowNode::createCustomContextContainer() {
   const auto &fabricUIManager =
       this->getContextContainer()->at<JFabricUIManager::javaobject>("FabricUIManager");
 
-  const auto customFabricUIManager = jni::make_global(createMethod(
+  const auto customFabricUIManager = SafeReleaseJniRef(jni::make_global(createMethod(
       customFabricUIManagerClass, fabricUIManager,
-      decoratorPropsRM.get(), parserId));
+      decoratorPropsRM.get(), parserId)));
   const auto contextContainer =
       std::make_shared<ContextContainer const>();
   contextContainer->insert("FabricUIManager", customFabricUIManager);