Selectable Tree Node

## Version of Dear PyGui

Version: 2.0.0
Operating System: Arch 6.5.3

## My Issue/Question

After creating 'selectable' tree node, the tree node seems to remain unselectable.

## To Reproduce

Steps to reproduce the behavior:
1. Click on a tree node to select it.
2. Move cursor off of tree node to see it was not selected.

## Expected behavior

Clicking on a selectable leaf tree node should select the tree node until clicked again to deselect it.
Clicking on a selectable non-leaf tree node should select the tree node and children nodes until clicked again to deselect the tree node and children nodes. If children nodes are selected via a parent node they should be able to be deselected individually.

## Screenshots/Video


## Standalone, minimal, complete and verifiable example

```python
# Here's some code anyone can copy and paste to reproduce your issue
import dearpygui.dearpygui as dpg

dpg.create_context()
dpg.create_viewport()
dpg.setup_dearpygui()

with dpg.window(label="tutorial"):
with dpg.tree_node(label="Root node", selectable=True):
dpg.add_tree_node(label="Leaf node", selectable=True, leaf=True)

dpg.show_viewport()
dpg.start_dearpygui()
dpg.destroy_context()
```