### 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
int final_pixel_size = stretch_avail * c->get_stretch_ratio() / stretch_ratio_total;
				if (final_pixel_size < msc.min_size) {
					
					
					msc.will_stretch = false;
					stretch_ratio_total -= c->get_stretch_ratio();
					refit_successful = false;
					stretch_avail -= msc.min_size;
					msc.final_size = msc.min_size;
					break;
				} else {
					msc.final_size = final_pixel_size;
				}
			}
		}
		if (refit_successful) { 
			break;
		}
	}
	
	int ofs = sb->get_margin(SIDE_TOP);
	first = true;
	int idx = 0;
	cache_y.clear();
	int w = new_size.width - sb->get_minimum_size().x;
	for (int i = 0; i < get_child_count(); i++) {
		Control *c = Object::cast_to<Control>(get_child(i));
		if (!c || !c->is_visible_in_tree()) {
			continue;