Fix missing SetIdentifierFromFlutterUpdate call in ConvertFlutterUpdate

The identifier field was added to FlutterSemanticsNode2 and
SetIdentifierFromFlutterUpdate() was implemented in the 3.41.4 update,
but the method was never called in ConvertFlutterUpdate(), causing
the identifier to be silently ignored when building the AX tree.

Author: JSUYA

flutter/shell/platform/common/accessibility_bridge.cc

@@ -292,6 +292,7 @@ void AccessibilityBridge::ConvertFlutterUpdate(const SemanticsNode& node,
   SetIntAttributesFromFlutterUpdate(node_data, node);
   SetIntListAttributesFromFlutterUpdate(node_data, node);
   SetStringListAttributesFromFlutterUpdate(node_data, node);
+  SetIdentifierFromFlutterUpdate(node_data, node);
   SetNameFromFlutterUpdate(node_data, node);
   SetValueFromFlutterUpdate(node_data, node);
   SetTooltipFromFlutterUpdate(node_data, node);