### 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
if (!awaiting_scroll_offset_update) {
		call_deferred(SNAME("_update_scroll_offset"));
		awaiting_scroll_offset_update = true;
	}
	top_layer->queue_redraw();
	minimap->queue_redraw();
	queue_redraw();
	if (!setting_scroll_ofs) { 
		emit_signal(SNAME("scroll_offset_changed"), get_scroll_ofs());
	}
}
void GraphEdit::_update_scroll_offset() {
	set_block_minimum_size_adjust(true);
	for (int i = 0; i < get_child_count(); i++) {
		GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
		if (!gn) {
			continue;
		}
		Point2 pos = gn->get_position_offset() * zoom;
		pos -= Point2(h_scroll->get_value(), v_scroll->get_value());
		gn->set_position(pos);
		if (gn->get_scale() != Vector2(zoom, zoom)) {
			gn->set_scale(Vector2(zoom, zoom));
		}
	}
	connections_layer->set_position(-Point2(h_scroll->get_value(), v_scroll->get_value()));
	set_block_minimum_size_adjust(false);
	awaiting_scroll_offset_update = false;
}
void GraphEdit::_update_scroll() {