Fix Litho container props in layout inspector

Summary: The layout inspector isn't showing props for litho views. This fixes that.

Reviewed By: passy

Differential Revision: D14052057

fbshipit-source-id: fa6fe14785bc1588db6624c1319aedf88d843763

android/src/main/java/com/facebook/flipper/plugins/litho/DebugComponentDescriptor.java

@@ -159,7 +159,10 @@ public class DebugComponentDescriptor extends NodeDescriptor<DebugComponent> {
       data.add(new Named<>("Layout", layoutData));
     }
 
-    data.addAll(getPropData(node));
+    final List<Named<FlipperObject>> propData = getPropData(node);
+    if (propData != null) {
+      data.addAll(propData);
+    }
 
     final FlipperObject stateData = getStateData(node);
     if (stateData != null) {