### 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 graph_offset = _get_graph_offset();
	Vector2 graph_size = _get_graph_size();
	camera_position = ge->get_scroll_ofs() - graph_offset;
	camera_size = ge->get_size();
	Vector2 render_size = _get_render_size();
	float target_ratio = render_size.x / render_size.y;
	float graph_ratio = graph_size.x / graph_size.y;
	graph_proportions = graph_size;
	graph_padding = Vector2(0, 0);
	if (graph_ratio > target_ratio) {
		graph_proportions.x = graph_size.x;
		graph_proportions.y = graph_size.x / target_ratio;
		graph_padding.y = Math::abs(graph_size.y - graph_proportions.y) / 2;
	} else {
		graph_proportions.x = graph_size.y * target_ratio;
		graph_proportions.y = graph_size.y;
		graph_padding.x = Math::abs(graph_size.x - graph_proportions.x) / 2;
	}
	
	minimap_offset = minimap_padding + _convert_from_graph_position(graph_padding);
}
Rect2 GraphEditMinimap::get_camera_rect() {