### 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
close_rect = Rect2();
			}
			if (get_child_count() > 0) {
				for (const KeyValue<int, Slot> &E : slot_info) {
					if (E.key < 0 || E.key >= cache_y.size()) {
						continue;
					}
					if (!slot_info.has(E.key)) {
						continue;
					}
					const Slot &s = slot_info[E.key];
					
					if (s.enable_left) {
						Ref<Texture2D> p = port;
						if (s.custom_slot_left.is_valid()) {
							p = s.custom_slot_left;
						}
						p->draw(get_canvas_item(), icofs + Point2(edgeofs, cache_y[E.key]), s.color_left);
					}
					
					if (s.enable_right) {
						Ref<Texture2D> p = port;
						if (s.custom_slot_right.is_valid()) {
							p = s.custom_slot_right;
						}
						p->draw(get_canvas_item(), icofs + Point2(get_size().x - edgeofs, cache_y[E.key]), s.color_right);
					}
					
					if (s.draw_stylebox) {
						Control *c = Object::cast_to<Control>(get_child(E.key));