x_pos doesn't work on viewport with high-res display (Windows)

[v-ein]

Version of Dear PyGui

Version: 1.11.1
Operating System: Windows 10 (10.0.19045).

My Issue/Question

When UI scaling is set to 200% in Windows, DPG viewport sticks to the left edge of the screen no matter what x_pos is specified for the viewport.

Reported in this Discord thread:
https://discord.com/channels/736279277242417272/1142953321821372550/1259654875193802864

Probably caused by get_horizontal_shift in mvViewport_win32.cpp: it seems to be unaware that GetWindowRect is affected by DPI scaling, whereas DwmGetWindowAttribute is not. Therefore DPI scaling probably affects the overall result, though I don't see how it can produce large enough offset.

Another hypothesis is that GetWindowRect fails for some reason, and window_rectangle remains uninitialized, which yields random garbage in the return value.

To Reproduce

TBD

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

x_pos placing the viewport at the specified position.

Screenshots/Video

TBD

Standalone, minimal, complete and verifiable example

TBD

# 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"):
    dpg.add_button(label="Press me")

more_code_to_explain_my_issue()

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