### Godot version

v4.2.dev.custom_build [c3b0a92c3]

### System information

Debian Linux X11 Xfce

### Issue description

In the following scene tree it is not possible to write anything in `LineEditB`.
![image](https://github.com/godotengine/godot/assets/6299227/ce5f696a-d86a-402f-98f7-6a762f15543e)

I would expect, that it is possible to focus `LineEditB` with a mouse click and write into it.

Regression from #58334

### Steps to reproduce

1. Load and run MRP
2. Mouse Click into the left LineEditB
3. Type Keyboard => No letters appear in the LineEditB

Variant:

1. Load and run MRP
2. Mouse Click into the right LineEditA
3. Mouse Click into the left LineEditB
4. Type Keyboard => Letters appear in LineEditA instead of LineEditB


### Minimal reproduction project

[BugKeyInputRouting.zip](https://github.com/godotengine/godot/files/11994804/BugKeyInputRouting.zip)

for (const ObjectID &id : gui.canvas_parents_with_dirty_order) {
		Object *obj = ObjectDB::get_instance(id);
		if (!obj) {
			continue; 
		}
		Node *n = static_cast<Node *>(obj);
		for (int i = 0; i < n->get_child_count(); i++) {
			Node *c = n->get_child(i);
			CanvasItem *ci = Object::cast_to<CanvasItem>(c);
			if (ci) {
				ci->update_draw_order();
				continue;
			}
			CanvasLayer *cl = Object::cast_to<CanvasLayer>(c);
			if (cl) {
				cl->update_draw_order();
			}
		}
	}
	gui.canvas_parents_with_dirty_order.clear();
}
void Viewport::_sub_window_update_order() {