* fix: don't call X11 functions in file dialog and message box
* refactor: remove unused GtkUiPlatform declaration
* fix: set gtk darktheme only when running under X11
* fix: replace X11 window state watcher with implementation using ozone
* fix: make sure global menu barr is used only when supported
* fix: don't call X11 function in native window views under wayland
* style: fix lint issues
* fix: use GtkUiPlatform::ShowGtkWindow instead of gtk_window_present directly
* refactor: extract CreateGlobalMenuBar into separate function
* refactor: move checking for WaylandWindowDecorations inside class
* fix: check if we run under X11 only in ozone build
* refactor: drop including unused ui/base/ui_base_features.h header
* fix: modify ui_gtk_public_header.patch to also export gtk_ui.h
* fix: refactor guarding of X11 calls
- Introduce patch exposing new electron_can_call_x11 property
- Replace defined(USE_OZONE) with BUILDFLAG(OZONE_PLATFORM_X11) flags
* fix: remove the last remaining usage of USE_X11
* fix: usage of BUILDFLAG(OZONE_PLATFORM_X11) not building on non ozone
* fix: call UpdateWindowState from OnBoundsChanged only under X11
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