### 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
draw_line(Vector2(0, base_ofs), Vector2(get_size().width, base_ofs), color);
				}
			}
		} break;
		case NOTIFICATION_RESIZED: {
			_update_scroll();
			top_layer->queue_redraw();
			minimap->queue_redraw();
		} break;
	}
}
void GraphEdit::_update_comment_enclosed_nodes_list(GraphNode *p_node, HashMap<StringName, Vector<GraphNode *>> &p_comment_enclosed_nodes) {
	Rect2 comment_node_rect = p_node->get_rect();
	comment_node_rect.size *= zoom;
	Vector<GraphNode *> enclosed_nodes;
	for (int i = 0; i < get_child_count(); i++) {
		GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
		if (!gn || gn->is_selected()) {
			continue;
		}
		Rect2 node_rect = gn->get_rect();
		node_rect.size *= zoom;
		bool included = comment_node_rect.encloses(node_rect);
		if (included) {
			enclosed_nodes.push_back(gn);
		}
	}
	p_comment_enclosed_nodes.insert(p_node->get_name(), enclosed_nodes);
}
void GraphEdit::_set_drag_comment_enclosed_nodes(GraphNode *p_node, HashMap<StringName, Vector<GraphNode *>> &p_comment_enclosed_nodes, bool p_drag) {