Tooltip is hidden when left mouse button is down

## Version of Dear PyGui

Version: 1.6.2
Operating System: Windows 10

## My Issue/Question

Tooltip assigned to a child window is hidden when user clicks and holds left mouse button on the child window (tooltip gets hidden on mouse_down, gets back visible on mouse_up).

## To Reproduce

Steps to reproduce the behavior:
1. Hover the child window
2. Press and hold left mouse button
3. The tooltip disappears

## Expected behavior

The tooltip should be visible no matter what button is clicked.

## Standalone, minimal, complete and verifiable example

```python
import dearpygui.dearpygui as dpg

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

with dpg.window(tag="primary"):
with dpg.group(horizontal=False):
with dpg.child_window(width=-1, height=-1):
with dpg.tooltip(dpg.last_item()):
dpg.add_text("Hi there!")

dpg.show_viewport()
dpg.set_primary_window("primary", True)
dpg.start_dearpygui()
dpg.destroy_context()
```