### Godot version

4.0.dev (d0398f62f0)

### System information

Windows 10

### Issue description

`GraphNode` class declares members with conflicting names.  
- `selected` property: https://github.com/godotengine/godot/blob/0daa86d70e7338506c37bee6b6e0c4aba7255d68/scene/gui/graph_node.cpp#L1154
- `selected` signal: https://github.com/godotengine/godot/blob/0daa86d70e7338506c37bee6b6e0c4aba7255d68/scene/gui/graph_node.cpp#L1164

As now signals are truely members of the class, this leads to name colliding in several languages.  
- In GDScript, the signal can't be used as it is treated as a property:
![image](https://user-images.githubusercontent.com/48322356/210059248-edbbd142-5d34-41f0-a3f5-08d4f2e02fc3.png)
- In Kotlin, the generated API code cannot compile as signal and property declarations are conflicting:
```
e: ~\git\godot\modules\kotlin_jvm\kt\godot-library\src\main\kotlin\godot\gen\godot\GraphNode.kt: (53, 14): Conflicting declarations: public final val selected: Signal0, public final var selected: Boolean
e: ~\git\godot\modules\kotlin_jvm\kt\godot-library\src\main\kotlin\godot\gen\godot\GraphNode.kt: (182, 14): Conflicting declarations: public final val selected: Signal0, public final var selected: Boolean
```

### Steps to reproduce

Try to use `selected` signal from GDScript.

### Minimal reproduction project

N/A
Vector2 mpos = mb->get_position();
			if (close_rect.size != Size2() && close_rect.has_point(mpos)) {
				
				get_parent_control()->grab_focus();
				emit_signal(SNAME("close_request"));
				accept_event();
				return;
			}
			Ref<Texture2D> resizer = get_theme_icon(SNAME("resizer"));
			if (resizable && mpos.x > get_size().x - resizer->get_width() && mpos.y > get_size().y - resizer->get_height()) {
				resizing = true;
				resizing_from = mpos;
				resizing_from_size = get_size();
				accept_event();
				return;
			}
			emit_signal(SNAME("raise_request"));
		}
		if (!mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
			resizing = false;
		}
	}
	Ref<InputEventMouseMotion> mm = p_ev;
	if (resizing && mm.is_valid()) {
		Vector2 mpos = mm->get_position();
		Vector2 diff = mpos - resizing_from;
		emit_signal(SNAME("resize_request"), resizing_from_size + diff);
	}
}
void GraphNode::set_overlay(Overlay p_overlay) {