bug: Window sizing issues on Linux

Description

I would like to make a customized frameless window. The window has a minimum size requirement for elements to be shown properly. I found that when window_title_bar_hidden is set, neither window_min_height nor window_min_width is effective.

Code example to reproduce the issue:

import flet as ft


def entry(page: ft.Page):
    content = ft.Text("Hello world!")
    page.add(content)

    page.window_title_bar_hidden = True
    page.window_min_height = 600
    page.window_min_width = 800

    page.update()


ft.app(target=entry)

Describe the results you received:

The window can be resized to any arbitrary size.

Describe the results you expected:

The window shouldn't be smaller when limits are hit.

Additional information you deem important (e.g. issue happens only occasionally):

Async runtime is also affected.

Flet version (pip show flet):

Name: flet
Version: 0.9.0
Summary: Flet for Python - easily build interactive multi-platform apps in Python
Home-page: 
Author: Appveyor Systems Inc.
Author-email: hello@flet.dev
License: Apache-2.0
Location: /path/to/project/.venv/lib/python3.11/site-packages
Requires: copier, flet-runtime, packaging, pydantic, qrcode, watchdog, websocket-client, websockets
Required-by:

Operating system:

ArchLinux

Additional environment details:

• GNOME: 1:44.3-1
  • both Wayland and X11

Run the provided Python reproducer on ArchLinux under both Wayland and X11, with window_title_bar_hidden enabled and the stated minimum dimensions. Trace the desktop window-sizing entry point used by this configuration, including the async runtime path. Done means frameless windows cannot be resized below the configured minimum width and height in both runtime modes.