Fix: Android release build issue due to "unused" children variable (#730)

Co-authored-by: war-in <war-in@users.noreply.github.com>

Author: war-in

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

@@ -166,7 +166,7 @@ void MarkdownTextInputDecoratorShadowNode::layout(LayoutContext layoutContext) {
       children.size() == 1 &&
       "MarkdownTextInputDecoratorView didn't receive exactly one child");
 
-  auto child = std::static_pointer_cast<const YogaLayoutableShadowNode>(getChildren()[0]);
+  auto child = std::static_pointer_cast<const YogaLayoutableShadowNode>(children[0]);
   child->ensureUnsealed();
   auto mutableChild = std::const_pointer_cast<YogaLayoutableShadowNode>(child);