Instrumentation for SurfaceMountingManager

Summary:
This diff adds a Systrace section to the `SurfaceMountingManager::createViewUnsafe` method.
This will allow us to see more detail within the `MountItemDispatcher::mountViews preMountItems` that was previously almost blank.
Changelog: [Internal]

Differential Revision: D62247235

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/SurfaceMountingManager.java

@@ -46,6 +46,7 @@
 import com.facebook.react.uimanager.ViewManager;
 import com.facebook.react.uimanager.ViewManagerRegistry;
 import com.facebook.react.uimanager.events.EventCategoryDef;
+import com.facebook.systrace.Systrace;
 import java.util.ArrayDeque;
 import java.util.HashSet;
 import java.util.LinkedList;
@@ -659,6 +660,9 @@ public void createViewUnsafe(
       @Nullable StateWrapper stateWrapper,
       @Nullable EventEmitterWrapper eventEmitterWrapper,
       boolean isLayoutable) {
+    Systrace.beginSection(
+        Systrace.TRACE_TAG_REACT_JAVA_BRIDGE,
+        "SurfaceMountingManager::createViewUnsafe(" + componentName + ")");
     ReactStylesDiffMap propMap = new ReactStylesDiffMap(props);
 
     ViewState viewState = new ViewState(reactTag);
@@ -675,6 +679,7 @@ public void createViewUnsafe(
               reactTag, mThemedReactContext, propMap, stateWrapper, mJSResponderHandler);
       viewState.mViewManager = viewManager;
     }
+    Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
   }
 
   public void updateProps(int reactTag, ReadableMap props) {