mixed up category and subcategory names in nodes shift-a menu

[Andrej730]

Sverchok version used - 242d6f8
Blender 3.6.5

Steps to reproduce

1. Install the following addon -
   sverchok_subcategory_issue.py.txt

(replace .py.txt extension with .py). The code of the addon is attached at the end of this post.

2. Create a new sverchok node graph and open shift-a menu.
   In category "Ladybug -> Viz" you can see the nodes from main node category "Viz" and from subcategory and node "LB Out" is not present.
   

Expected to see just 1 node "LB Out".

Though node is still available through node search:

Nodes category and subcategory are registered using

from sverchok.ui.nodeview_space_menu import add_node_menu
# [{'Ladybug': [{'Viz': ['SvLBOut']}, {'Analyze Data': ['SvComfStat']}]}]
print(node_categories)
add_node_menu.append_from_config(node_categories)

sverchok_subcategory_issue.py

bl_info = {
    "name": "Ladybug Tools",
    "author": "Dion Moult",
    "version": (0, 0, 240515),
    "blender": (2, 90, 0),
    "location": "Node Editor",
    "category": "Node",
    "description": "Ladybug, Honeybee, Butterfly, and Dragonfly for Blender",
    "warning": "",
    "wiki_url": "https://wiki.osarch.org/",
    "tracker_url": "https://github.com/ladybug-tools/ladybug-blender",
}

import bpy
from sverchok.ui.nodeview_space_menu import add_node_menu
from sverchok.node_tree import SverchCustomTreeNode


class SvComfStat(bpy.types.Node, SverchCustomTreeNode):
    bl_idname = "SvComfStat"
    bl_label = "LB Comfort Statistics"

class SvLBOut(bpy.types.Node, SverchCustomTreeNode):
    bl_idname = "SvLBOut"
    bl_label = "LB Out"


classes = [SvComfStat, SvLBOut]
node_categories = [
    {
        "Ladybug":
            [
                {"Viz": ["SvLBOut"]},
                {"Analyze Data": ["SvComfStat"]}
            ]
    }
]
add_node_menu.append_from_config(node_categories)


def register():
    add_node_menu.register()
    for cl in classes:
        bpy.utils.register_class(cl)


def unregister():
    for cl in classes:
        bpy.utils.unregister_class(cl)