### 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
for (const List<Connection>::Element *E = connections.front(); E; E = E->next()) {
		if (E->get().from == p_from && E->get().from_port == p_from_port && E->get().to == p_to && E->get().to_port == p_to_port) {
			connections.erase(E);
			top_layer->queue_redraw();
			minimap->queue_redraw();
			queue_redraw();
			connections_layer->queue_redraw();
			return;
		}
	}
}
void GraphEdit::get_connection_list(List<Connection> *r_connections) const {
	*r_connections = connections;
}
void GraphEdit::set_scroll_ofs(const Vector2 &p_ofs) {
	setting_scroll_ofs = true;
	h_scroll->set_value(p_ofs.x);
	v_scroll->set_value(p_ofs.y);
	_update_scroll();
	setting_scroll_ofs = false;
}
Vector2 GraphEdit::get_scroll_ofs() const {
	return Vector2(h_scroll->get_value(), v_scroll->get_value());
}
void GraphEdit::_scroll_moved(double) {