Assign explicit ID to Export As menu

Author: KoBeWi

editor/editor_node.cpp

@@ -8459,7 +8459,7 @@ EditorNode::EditorNode() {
 
 	file_menu->add_separator();
 	export_as_menu = memnew(PopupMenu);
-	file_menu->add_submenu_node_item(TTRC("Export As..."), export_as_menu);
+	file_menu->add_submenu_node_item(TTRC("Export As..."), export_as_menu, SCENE_EXPORT_AS);
 	export_as_menu->add_shortcut(ED_SHORTCUT("editor/export_as_mesh_library", TTRC("MeshLibrary...")), FILE_EXPORT_MESH_LIBRARY);
 	export_as_menu->connect("index_pressed", callable_mp(this, &EditorNode::_export_as_menu_option));
 

editor/editor_node.h

@@ -153,6 +153,7 @@ class EditorNode : public Node {
 		SCENE_QUICK_OPEN,
 		SCENE_QUICK_OPEN_SCENE,
 		SCENE_QUICK_OPEN_SCRIPT,
+		SCENE_EXPORT_AS,
 		SCENE_UNDO,
 		SCENE_REDO,
 		SCENE_RELOAD_SAVED_SCENE,