[X11] Fix mouse events triggered by non-popup or non-focused window

[Cliear]

Fix: #94615
There are several issues here:

1. By default, the focused property of windows created by X11 is set to true:

   godot/platform/linuxbsd/x11/display_server_x11.h

   Line 204 in 8e36f98

   bool focused = true;

   
   And it is only modified after a focus event occurs:

   godot/platform/linuxbsd/x11/display_server_x11.cpp

   Lines 4661 to 4669 in 8e36f98

   	case FocusIn: {
   	DEBUG_LOG_X11("[%u] FocusIn window=%lu (%u), mode='%u' \n", frame, event.xfocus.window, window_id, event.xfocus.mode);
   	if (ime_window_event || (event.xfocus.detail == NotifyInferior)) {
   	break;
   	}
   	WindowData &wd = windows[window_id];
   	last_focused_window = window_id;
   	wd.focused = true;

   
   

   godot/platform/linuxbsd/x11/display_server_x11.cpp

   Lines 4708 to 4723 in 8e36f98

   	case FocusOut: {
   	DEBUG_LOG_X11("[%u] FocusOut window=%lu (%u), mode='%u' \n", frame, event.xfocus.window, window_id, event.xfocus.mode);
   	WindowData &wd = windows[window_id];
   	if (ime_window_event || (event.xfocus.detail == NotifyInferior)) {
   	break;
   	}
   	if (wd.ime_active) {
   	MutexLock mutex_lock(events_mutex);
   	XUnsetICFocus(wd.xic);
   	XUnmapWindow(x11_display, wd.x11_xim_window);
   	wd.ime_active = false;
   	im_text = String();
   	im_selection = Vector2i();
   	OS_Unix::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_OS_IME_UPDATE);
   	}
   	wd.focused = false;

2. That leads to a situation where the focued of main window is true, and the newly created popup window also has a focused property of true, resulting in multiple windows with a true focused property.

3. When a mouse movement event occurs, if the event happens on the main window and the main window's focued property is true, even if the popup window's focused property is also true, the event will be handled by the main window, During the main window' event handling process, it will close the popop window.

And I am not sure whether to modify the default focused property.

[kitbdev]

• Looks like the opposite of Fix InputEventMouseMotion is sent to the wrong Popup on Windows #85583, but to match the Windows behavior on X11.

Would this introduce either of these issues on X11:

• PopupMenu does not highlight items on mouse over if a submenu is opened #70361
• Tooltips break hover events for underlying controls #73926

[Cliear]

Here indeed introduces a problem

When The mouse moves quickly, it ignores the event.
When the mouse enters anther block and stops immediately, this event will be captured by the popup window.
To ensure consistency with behavior on other platforms, the condition can be changed to "windows[focused_window_id].mpass || wd.is_popup"

[Cliear]

Here is an issue in 4.3 bata 3

The issue have become more apparent after this update